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.

A109657 Numbers n such that the sum of the digits of Sum_{k=1..n} (k!) is divisible by n.

Table of values

n a(n)
1 1
2 3
3 6
4 9
5 12
6 18
7 54
8 117
9 272
10 294
11 296
12 320
13 783
14 1125
15 2088
16 3375
17 16164
18 16407
19 26286
20 26777
21 26784
22 27516
23 27568
24 45945
25 74970
26 124236
27 125589
28 208116
29 348705
30 583746
31 586218
32 586353
33 586368
34 586536
35 588567
36 2712944
37 2714655
38 2714912
39 2720288
40 2720399

List of values

[1, 3, 6, 9, 12, 18, 54, 117, 272, 294, 296, 320, 783, 1125, 2088, 3375, 16164, 16407, 26286, 26777, 26784, 27516, 27568, 45945, 74970, 124236, 125589, 208116, 348705, 583746, 586218, 586353, 586368, 586536, 588567, 2712944, 2714655, 2714912, 2720288, 2720399]