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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.

A342436 a(n) = Sum_{k=1..n} gcd(k,n)^(gcd(k,n) - 1).

Table of values

n a(n)
1 1
2 3
3 11
4 68
5 629
6 7791
7 117655
8 2097224
9 43046745
10 1000000637
11 25937424611
12 743008378618
13 23298085122493
14 793714773371811
15 29192926025391919
16 1152921504608944272
17 48661191875666868497
18 2185911559738739594277
19 104127350297911241532859

List of values

[1, 3, 11, 68, 629, 7791, 117655, 2097224, 43046745, 1000000637, 25937424611, 743008378618, 23298085122493, 793714773371811, 29192926025391919, 1152921504608944272, 48661191875666868497, 2185911559738739594277, 104127350297911241532859]

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

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