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.

A131954 a(n) = sum of digits of (n! + a(n-1)), with a(1)=1.

Table of values

n a(n)
1 1
2 3
3 9
4 6
5 9
6 18
7 18
8 18
9 36
10 36
11 45
12 36
13 36
14 54
15 54
16 72
17 72
18 63
19 54
20 63
21 72
22 81
23 108
24 90
25 81
26 90
27 117
28 99
29 144
30 126
31 144
32 117
33 153
34 153
35 153
36 180
37 162
38 117
39 198
40 207
41 153
42 198
43 198
44 234
45 216
46 225
47 234
48 243
49 234
50 225
51 207
52 288
53 297
54 279
55 297
56 351
57 279
58 306
59 333
60 297

List of values

[1, 3, 9, 6, 9, 18, 18, 18, 36, 36, 45, 36, 36, 54, 54, 72, 72, 63, 54, 63, 72, 81, 108, 90, 81, 90, 117, 99, 144, 126, 144, 117, 153, 153, 153, 180, 162, 117, 198, 207, 153, 198, 198, 234, 216, 225, 234, 243, 234, 225, 207, 288, 297, 279, 297, 351, 279, 306, 333, 297]