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.

A372998 a(n) = Sum_{k=1..n} sigma( (n/gcd(k,n))^3 ).

Table of values

n a(n)
1 1
2 16
3 81
4 270
5 625
6 1296
7 2401
8 4362
9 6639
10 10000
11 14641
12 21870
13 28561
14 38416
15 50625
16 69890
17 83521
18 106224
19 130321
20 168750
21 194481
22 234256
23 279841
24 353322
25 391245
26 456976
27 538071
28 648270
29 707281
30 810000
31 923521
32 1118450
33 1185921
34 1336336
35 1500625
36 1792530

List of values

[1, 16, 81, 270, 625, 1296, 2401, 4362, 6639, 10000, 14641, 21870, 28561, 38416, 50625, 69890, 83521, 106224, 130321, 168750, 194481, 234256, 279841, 353322, 391245, 456976, 538071, 648270, 707281, 810000, 923521, 1118450, 1185921, 1336336, 1500625, 1792530]