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.

A047872 a(n) = floor(abs(B(2*n + 2)/B(2*n))) where B(n) is the n-th Bernoulli number.

Table of values

n a(n)
0 0
1 0
2 0
3 1
4 2
5 3
6 4
7 6
8 7
9 9
10 11
11 13
12 16
13 19
14 22
15 25
16 28
17 31
18 35
19 39
20 43
21 47
22 52
23 57
24 62
25 67
26 72
27 78
28 83
29 89
30 95
31 102
32 108
33 115
34 122
35 129
36 136
37 144
38 152
39 160
40 168
41 176
42 185
43 193
44 202
45 212
46 221
47 231
48 240
49 250
50 260
51 271
52 281
53 292
54 303
55 314
56 326
57 337
58 349
59 361
60 373

List of values

[0, 0, 0, 1, 2, 3, 4, 6, 7, 9, 11, 13, 16, 19, 22, 25, 28, 31, 35, 39, 43, 47, 52, 57, 62, 67, 72, 78, 83, 89, 95, 102, 108, 115, 122, 129, 136, 144, 152, 160, 168, 176, 185, 193, 202, 212, 221, 231, 240, 250, 260, 271, 281, 292, 303, 314, 326, 337, 349, 361, 373]