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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.

A342412 a(n) = Sum_{k=1..n} (n/gcd(k,n))^(n-2).

Table of values

n a(n)
1 1
2 2
3 7
4 37
5 501
6 2771
7 100843
8 1056833
9 28702189
10 401562757
11 23579476911
12 247792605523
13 21505924728445
14 340246521979079
15 15569565432876147
16 576478345026355201
17 45798768824157052689
18 728648310343004595593
19 98646963440126439346903

List of values

[1, 2, 7, 37, 501, 2771, 100843, 1056833, 28702189, 401562757, 23579476911, 247792605523, 21505924728445, 340246521979079, 15569565432876147, 576478345026355201, 45798768824157052689, 728648310343004595593, 98646963440126439346903]

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

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