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.

A247954 a(n) = sigma(sigma(2n-1)).

Table of values

n a(n)
1 1
2 7
3 12
4 15
5 14
6 28
7 24
8 60
9 39
10 42
11 63
12 60
13 32
14 90
15 72
16 63
17 124
18 124
19 60
20 120
21 96
22 84
23 168
24 124
25 80
26 195
27 120
28 195
29 186
30 168
31 96
32 210
33 224
34 126
35 252
36 195
37 114
38 224
39 252
40 186
41 133
42 224
43 280
44 360
45 234
46 248
47 255
48 360
49 171
50 392
51 216
52 210
53 508
54 280
55 216
56 300

List of values

[1, 7, 12, 15, 14, 28, 24, 60, 39, 42, 63, 60, 32, 90, 72, 63, 124, 124, 60, 120, 96, 84, 168, 124, 80, 195, 120, 195, 186, 168, 96, 210, 224, 126, 252, 195, 114, 224, 252, 186, 133, 224, 280, 360, 234, 248, 255, 360, 171, 392, 216, 210, 508, 280, 216, 300]