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.

A342411 a(n) = Sum_{k=1..n} (n/gcd(k,n))^(n/gcd(k,n) - 2).

Table of values

n a(n)
1 1
2 2
3 7
4 34
5 501
6 2600
7 100843
8 1048610
9 28697821
10 400000502
11 23579476911
12 247669459528
13 21505924728445
14 340163474352620
15 15569560546875507
16 576460752304472098
17 45798768824157052689
18 728637186579594211070
19 98646963440126439346903

List of values

[1, 2, 7, 34, 501, 2600, 100843, 1048610, 28697821, 400000502, 23579476911, 247669459528, 21505924728445, 340163474352620, 15569560546875507, 576460752304472098, 45798768824157052689, 728637186579594211070, 98646963440126439346903]

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

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