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.

A373000 a(n) = Sum_{k=1..n} sigma( (n/gcd(k,n))^4 ).

Table of values

n a(n)
1 1
2 32
3 243
4 1054
5 3125
6 7776
7 16807
8 33818
9 59289
10 100000
11 161051
12 256122
13 371293
14 537824
15 759375
16 1082386
17 1419857
18 1897248
19 2476099
20 3293750
21 4084101
22 5153632
23 6436343
24 8217774
25 9768745
26 11881376
27 14408187
28 17714578
29 20511149
30 24300000
31 28629151
32 34636802
33 39135393

List of values

[1, 32, 243, 1054, 3125, 7776, 16807, 33818, 59289, 100000, 161051, 256122, 371293, 537824, 759375, 1082386, 1419857, 1897248, 2476099, 3293750, 4084101, 5153632, 6436343, 8217774, 9768745, 11881376, 14408187, 17714578, 20511149, 24300000, 28629151, 34636802, 39135393]