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.

A131955 a(n) = sum of digits of (n!! + a(n-1)).

Table of values

n a(n)
1 1
2 3
3 6
4 5
5 2
6 5
7 2
8 17
9 17
10 23
11 14
12 23
13 23
14 23
15 23
16 23
17 41
18 41
19 41
20 41
21 41
22 50
23 41
24 59
25 68
26 59
27 68
28 59
29 68
30 86
31 86
32 104
33 95
34 95
35 104
36 86
37 104
38 86
39 122
40 95
41 104
42 113
43 149
44 95
45 140
46 95
47 131
48 122
49 149
50 140
51 140
52 113
53 185
54 149
55 185
56 149
57 176
58 194
59 176
60 185
61 194
62 194
63 203

List of values

[1, 3, 6, 5, 2, 5, 2, 17, 17, 23, 14, 23, 23, 23, 23, 23, 41, 41, 41, 41, 41, 50, 41, 59, 68, 59, 68, 59, 68, 86, 86, 104, 95, 95, 104, 86, 104, 86, 122, 95, 104, 113, 149, 95, 140, 95, 131, 122, 149, 140, 140, 113, 185, 149, 185, 149, 176, 194, 176, 185, 194, 194, 203]