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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.

A308693 a(n) = Sum_{d|n} d^(3*(n/d - 1)).

Table of values

n a(n)
1 1
2 2
3 2
4 10
5 2
6 93
7 2
8 578
9 731
10 4223
11 2
12 56765
13 2
14 262489
15 547068
16 2359810
17 2
18 31173510
19 2
20 152949071
21 387538140
22 1073743157
23 2
24 20134371189
25 244140627
26 68719478935
27 282430067924
28 618515646977
29 2
30 12056339359929
31 2
32 39582552821762
33 205891133866212

List of values

[1, 2, 2, 10, 2, 93, 2, 578, 731, 4223, 2, 56765, 2, 262489, 547068, 2359810, 2, 31173510, 2, 152949071, 387538140, 1073743157, 2, 20134371189, 244140627, 68719478935, 282430067924, 618515646977, 2, 12056339359929, 2, 39582552821762, 205891133866212]

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

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