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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.

A373004 a(n) = Sum_{k=1..n} sigma( (n/gcd(k,n))^n ).

Table of values

n a(n)
1 1
2 8
3 81
4 1054
5 15625
6 279936
7 5764801
8 134480378
9 3486843447
10 100000000000
11 3138428376721
12 107006262884442
13 3937376385699289
14 155568095557812224
15 6568408355712890625
16 295150156996346511346
17 14063084452067724991009
18 708235345964697414795264

List of values

[1, 8, 81, 1054, 15625, 279936, 5764801, 134480378, 3486843447, 100000000000, 3138428376721, 107006262884442, 3937376385699289, 155568095557812224, 6568408355712890625, 295150156996346511346, 14063084452067724991009, 708235345964697414795264]

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

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