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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A233829 a(n) = 3*binomial(6*n+9,n)/(2*n+3).

Table of values

n a(n)
0 1
1 9
2 90
3 975
4 11160
5 132867
6 1629012
7 20430900
8 260907075
9 3381098545
10 44352058608
11 587787511779
12 7858257798300
13 105855415586550
14 1435361957277480
15 19576154604317304
16 268364706225271110
17 3695862686045572350
18 51108790709588823150

List of values

[1, 9, 90, 975, 11160, 132867, 1629012, 20430900, 260907075, 3381098545, 44352058608, 587787511779, 7858257798300, 105855415586550, 1435361957277480, 19576154604317304, 268364706225271110, 3695862686045572350, 51108790709588823150]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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