What's the next number in this number sequence?

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP











up vote
3
down vote

favorite












Find the next number in this sequence:



2, 4, 8, 13, 20, 29, 41, ?



EXTENSION:
Find the number for the nth term in the sequence (in terms of n).



Hint:




Fibonacci+Triangle







number-sequence







share|improve this question









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  • mathworld.wolfram.com/TribonacciNumber.html
    – Duck
    Sep 9 at 2:33










  • The hint has nothing to do with that.
    – ThyrsoidMouse73
    Sep 9 at 2:34










  • Ok, just checking
    – Duck
    Sep 9 at 2:35










  • And I changed it to make it more obvious.
    – ThyrsoidMouse73
    Sep 9 at 2:37






  • 1




    OEIS found this but I don't think that is what you had in mind
    – Bennett Bernardoni
    Sep 9 at 2:45














up vote
3
down vote

favorite












Find the next number in this sequence:



2, 4, 8, 13, 20, 29, 41, ?



EXTENSION:
Find the number for the nth term in the sequence (in terms of n).



Hint:




Fibonacci+Triangle







number-sequence







share|improve this question









New contributor




ThyrsoidMouse73 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.



















  • mathworld.wolfram.com/TribonacciNumber.html
    – Duck
    Sep 9 at 2:33










  • The hint has nothing to do with that.
    – ThyrsoidMouse73
    Sep 9 at 2:34










  • Ok, just checking
    – Duck
    Sep 9 at 2:35










  • And I changed it to make it more obvious.
    – ThyrsoidMouse73
    Sep 9 at 2:37






  • 1




    OEIS found this but I don't think that is what you had in mind
    – Bennett Bernardoni
    Sep 9 at 2:45












up vote
3
down vote

favorite









up vote
3
down vote

favorite











Find the next number in this sequence:



2, 4, 8, 13, 20, 29, 41, ?



EXTENSION:
Find the number for the nth term in the sequence (in terms of n).



Hint:




Fibonacci+Triangle







number-sequence







share|improve this question









New contributor




ThyrsoidMouse73 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











Find the next number in this sequence:



2, 4, 8, 13, 20, 29, 41, ?



EXTENSION:
Find the number for the nth term in the sequence (in terms of n).



Hint:




Fibonacci+Triangle







number-sequence




number-sequence






share|improve this question









New contributor




ThyrsoidMouse73 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




ThyrsoidMouse73 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited Sep 9 at 2:36





















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asked Sep 9 at 0:50









ThyrsoidMouse73

1578




1578




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ThyrsoidMouse73 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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Check out our Code of Conduct.











  • mathworld.wolfram.com/TribonacciNumber.html
    – Duck
    Sep 9 at 2:33










  • The hint has nothing to do with that.
    – ThyrsoidMouse73
    Sep 9 at 2:34










  • Ok, just checking
    – Duck
    Sep 9 at 2:35










  • And I changed it to make it more obvious.
    – ThyrsoidMouse73
    Sep 9 at 2:37






  • 1




    OEIS found this but I don't think that is what you had in mind
    – Bennett Bernardoni
    Sep 9 at 2:45
















  • mathworld.wolfram.com/TribonacciNumber.html
    – Duck
    Sep 9 at 2:33










  • The hint has nothing to do with that.
    – ThyrsoidMouse73
    Sep 9 at 2:34










  • Ok, just checking
    – Duck
    Sep 9 at 2:35










  • And I changed it to make it more obvious.
    – ThyrsoidMouse73
    Sep 9 at 2:37






  • 1




    OEIS found this but I don't think that is what you had in mind
    – Bennett Bernardoni
    Sep 9 at 2:45















mathworld.wolfram.com/TribonacciNumber.html
– Duck
Sep 9 at 2:33




mathworld.wolfram.com/TribonacciNumber.html
– Duck
Sep 9 at 2:33












The hint has nothing to do with that.
– ThyrsoidMouse73
Sep 9 at 2:34




The hint has nothing to do with that.
– ThyrsoidMouse73
Sep 9 at 2:34












Ok, just checking
– Duck
Sep 9 at 2:35




Ok, just checking
– Duck
Sep 9 at 2:35












And I changed it to make it more obvious.
– ThyrsoidMouse73
Sep 9 at 2:37




And I changed it to make it more obvious.
– ThyrsoidMouse73
Sep 9 at 2:37




1




1




OEIS found this but I don't think that is what you had in mind
– Bennett Bernardoni
Sep 9 at 2:45




OEIS found this but I don't think that is what you had in mind
– Bennett Bernardoni
Sep 9 at 2:45










2 Answers
2






active

oldest

votes

















up vote
7
down vote



accepted










I think the answer is




57




Solution for the extension :




solution







share|improve this answer








New contributor




Omega Krypton is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

















  • Yes, good job!!
    – ThyrsoidMouse73
    Sep 9 at 7:00

















up vote
11
down vote













The next number is




$34$




The formula is




$2^n - dfrac(n-1)(n-2)(n-3)2$







share|improve this answer






















  • I'm thinking of a different formula and I realized this worked as well so I'll edit the question.
    – ThyrsoidMouse73
    Sep 9 at 2:25











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2 Answers
2






active

oldest

votes








2 Answers
2






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
7
down vote



accepted










I think the answer is




57




Solution for the extension :




solution







share|improve this answer








New contributor




Omega Krypton is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

















  • Yes, good job!!
    – ThyrsoidMouse73
    Sep 9 at 7:00














up vote
7
down vote



accepted










I think the answer is




57




Solution for the extension :




solution







share|improve this answer








New contributor




Omega Krypton is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

















  • Yes, good job!!
    – ThyrsoidMouse73
    Sep 9 at 7:00












up vote
7
down vote



accepted







up vote
7
down vote



accepted






I think the answer is




57




Solution for the extension :




solution







share|improve this answer








New contributor




Omega Krypton is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









I think the answer is




57




Solution for the extension :




solution








share|improve this answer








New contributor




Omega Krypton is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this answer



share|improve this answer






New contributor




Omega Krypton is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









answered Sep 9 at 5:02









Omega Krypton

3007




3007




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Omega Krypton is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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New contributor





Omega Krypton is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Omega Krypton is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











  • Yes, good job!!
    – ThyrsoidMouse73
    Sep 9 at 7:00
















  • Yes, good job!!
    – ThyrsoidMouse73
    Sep 9 at 7:00















Yes, good job!!
– ThyrsoidMouse73
Sep 9 at 7:00




Yes, good job!!
– ThyrsoidMouse73
Sep 9 at 7:00










up vote
11
down vote













The next number is




$34$




The formula is




$2^n - dfrac(n-1)(n-2)(n-3)2$







share|improve this answer






















  • I'm thinking of a different formula and I realized this worked as well so I'll edit the question.
    – ThyrsoidMouse73
    Sep 9 at 2:25















up vote
11
down vote













The next number is




$34$




The formula is




$2^n - dfrac(n-1)(n-2)(n-3)2$







share|improve this answer






















  • I'm thinking of a different formula and I realized this worked as well so I'll edit the question.
    – ThyrsoidMouse73
    Sep 9 at 2:25













up vote
11
down vote










up vote
11
down vote









The next number is




$34$




The formula is




$2^n - dfrac(n-1)(n-2)(n-3)2$







share|improve this answer














The next number is




$34$




The formula is




$2^n - dfrac(n-1)(n-2)(n-3)2$








share|improve this answer














share|improve this answer



share|improve this answer








edited Sep 9 at 2:38









user477343

3,1861742




3,1861742










answered Sep 9 at 1:52









SteveV

7867




7867











  • I'm thinking of a different formula and I realized this worked as well so I'll edit the question.
    – ThyrsoidMouse73
    Sep 9 at 2:25

















  • I'm thinking of a different formula and I realized this worked as well so I'll edit the question.
    – ThyrsoidMouse73
    Sep 9 at 2:25
















I'm thinking of a different formula and I realized this worked as well so I'll edit the question.
– ThyrsoidMouse73
Sep 9 at 2:25





I'm thinking of a different formula and I realized this worked as well so I'll edit the question.
– ThyrsoidMouse73
Sep 9 at 2:25











ThyrsoidMouse73 is a new contributor. Be nice, and check out our Code of Conduct.









 

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