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.

A309267 Expansion of (1 + x) * Product_{k>=1} 1/(1 - x^k)^k.

Table of values

n a(n)
0 1
1 2
2 4
3 9
4 19
5 37
6 72
7 134
8 246
9 442
10 782
11 1359
12 2338
13 3964
14 6652
15 11046
16 18176
17 29631
18 47935
19 76931
20 122608
21 194072
22 305269
23 477258
24 741977
25 1147227
26 1764778
27 2701403
28 4115892
29 6242846
30 9428575
31 14181272
32 21245738
33 31708402
34 47150928
35 69867001
36 103176007
37 151864745
38 222821779

List of values

[1, 2, 4, 9, 19, 37, 72, 134, 246, 442, 782, 1359, 2338, 3964, 6652, 11046, 18176, 29631, 47935, 76931, 122608, 194072, 305269, 477258, 741977, 1147227, 1764778, 2701403, 4115892, 6242846, 9428575, 14181272, 21245738, 31708402, 47150928, 69867001, 103176007, 151864745, 222821779]