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.

A344434 a(n) = Sum_{d|n} sigma_d(d), where sigma_k(n) is the sum of the k-th powers of the divisors of n.

Table of values

n a(n)
1 1
2 6
3 29
4 279
5 3127
6 47484
7 823545
8 16843288
9 387440202
10 10009769782
11 285311670613
12 8918294591103
13 302875106592255
14 11112685049470800
15 437893920912789563
16 18447025552998138393
17 827240261886336764179
18 39346558271492566413252
19 1978419655660313589123981

List of values

[1, 6, 29, 279, 3127, 47484, 823545, 16843288, 387440202, 10009769782, 285311670613, 8918294591103, 302875106592255, 11112685049470800, 437893920912789563, 18447025552998138393, 827240261886336764179, 39346558271492566413252, 1978419655660313589123981]

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

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