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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.

A360731 Expansion of Sum_{k>=0} (k * x * (1 + k*x^3))^k.

Table of values

n a(n)
0 1
1 1
2 4
3 27
4 257
5 3141
6 46899
7 827639
8 16855357
9 389100834
10 10040378183
11 286386193685
12 8947506702834
13 303875954083536
14 11146559606379269
15 439178938765108083
16 18497974976610341624
17 829420114454360154295
18 39445018962975879216867

List of values

[1, 1, 4, 27, 257, 3141, 46899, 827639, 16855357, 389100834, 10040378183, 286386193685, 8947506702834, 303875954083536, 11146559606379269, 439178938765108083, 18497974976610341624, 829420114454360154295, 39445018962975879216867]

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

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