cp's OEIS Frontend

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.

A023887 a(n) = sigma_n(n): sum of n-th powers of divisors of n.

Table of values

n a(n)
1 1
2 5
3 28
4 273
5 3126
6 47450
7 823544
8 16843009
9 387440173
10 10009766650
11 285311670612
12 8918294543346
13 302875106592254
14 11112685048647250
15 437893920912786408
16 18447025552981295105
17 827240261886336764178
18 39346558271492178925595
19 1978419655660313589123980

List of values

[1, 5, 28, 273, 3126, 47450, 823544, 16843009, 387440173, 10009766650, 285311670612, 8918294543346, 302875106592254, 11112685048647250, 437893920912786408, 18447025552981295105, 827240261886336764178, 39346558271492178925595, 1978419655660313589123980]

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

Content is available under The OEIS End-User License Agreement.