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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.

A013961 a(n) = sigma_13(n), the sum of the 13th powers of the divisors of n.

Table of values

n a(n)
1 1
2 8193
3 1594324
4 67117057
5 1220703126
6 13062296532
7 96889010408
8 549822930945
9 2541867422653
10 10001220711318
11 34522712143932
12 107006334784468
13 302875106592254
14 793811662272744
15 1946196290656824
16 4504149450301441
17 9904578032905938
18 20825519793796029
19 42052983462257060

List of values

[1, 8193, 1594324, 67117057, 1220703126, 13062296532, 96889010408, 549822930945, 2541867422653, 10001220711318, 34522712143932, 107006334784468, 302875106592254, 793811662272744, 1946196290656824, 4504149450301441, 9904578032905938, 20825519793796029, 42052983462257060]

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

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