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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.

A096191 a(n) = Sum_{k=1..n} C(n,k)^3 where C(n,k) is binomial(n,k).

Table of values

n a(n)
1 1
2 9
3 55
4 345
5 2251
6 15183
7 104959
8 739161
9 5280931
10 38165259
11 278415919
12 2046924399
13 15148345759
14 112738423359
15 843126957055
16 6332299624281
17 47737325577619
18 361077477684435
19 2739270870994735
20 20836827035351595

List of values

[1, 9, 55, 345, 2251, 15183, 104959, 739161, 5280931, 38165259, 278415919, 2046924399, 15148345759, 112738423359, 843126957055, 6332299624281, 47737325577619, 361077477684435, 2739270870994735, 20836827035351595]

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

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