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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.

A077457 a(n) = sigma_4(n^4)/sigma_2(n^4).

Table of values

n a(n)
1 1
2 205
3 5905
4 52429
5 375601
6 1210525
7 5649505
8 13421773
9 38742049
10 76998205
11 212601841
12 309593245
13 810932305
14 1158148525
15 2217923905
16 3435973837
17 6951703105
18 7942120045
19 16936647121
20 19692384829
21 33360327025
22 43583377405
23 78163228705
24 79255569565
25 146719125601

List of values

[1, 205, 5905, 52429, 375601, 1210525, 5649505, 13421773, 38742049, 76998205, 212601841, 309593245, 810932305, 1158148525, 2217923905, 3435973837, 6951703105, 7942120045, 16936647121, 19692384829, 33360327025, 43583377405, 78163228705, 79255569565, 146719125601]

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

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