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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.

A342543 a(n) = Sum_{k=1..n} phi(gcd(k, n))^gcd(k, n).

Table of values

n a(n)
1 1
2 2
3 10
4 19
5 1028
6 76
7 279942
8 65558
9 10077718
10 1049608
11 100000000010
12 16777334
13 106993205379084
14 78364444044
15 35184372090920
16 281474976776236
17 295147905179352825872
18 101559966746268
19 708235345355337676357650
20 1152921504607897676
21 46005119909369702026044
22 10000000000100000000020

List of values

[1, 2, 10, 19, 1028, 76, 279942, 65558, 10077718, 1049608, 100000000010, 16777334, 106993205379084, 78364444044, 35184372090920, 281474976776236, 295147905179352825872, 101559966746268, 708235345355337676357650, 1152921504607897676, 46005119909369702026044, 10000000000100000000020]

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

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