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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.

A280797 a(n) = (n^n - 1)*(n^n + 1)/(n + 1).

Table of values

n a(n)
0 0
1 0
2 5
3 182
4 13107
5 1627604
6 310968905
7 84777884106
8 31274997412295
9 15009463529699912
10 9090909090909090909
11 6783562448903313426110
12 6115142092568526471803195
13 6552380728090615475599972572
14 8231779712749862388415318790417
15 11984441202055255416780710220336914

List of values

[0, 0, 5, 182, 13107, 1627604, 310968905, 84777884106, 31274997412295, 15009463529699912, 9090909090909090909, 6783562448903313426110, 6115142092568526471803195, 6552380728090615475599972572, 8231779712749862388415318790417, 11984441202055255416780710220336914]

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

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