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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.

A332653 a(n) = (1/n) * Sum_{k=1..n} n^(k/gcd(n, k)).

Table of values

n a(n)
1 1
2 2
3 5
4 19
5 157
6 1306
7 19609
8 266372
9 5321721
10 101001214
11 2593742461
12 61920391842
13 1941507093541
14 56984643437138
15 2076518238897649
16 72340172854919941
17 3041324492229179281
18 121440691499123469858
19 5784852794328402307381
20 262799364106291328009626

List of values

[1, 2, 5, 19, 157, 1306, 19609, 266372, 5321721, 101001214, 2593742461, 61920391842, 1941507093541, 56984643437138, 2076518238897649, 72340172854919941, 3041324492229179281, 121440691499123469858, 5784852794328402307381, 262799364106291328009626]

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

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