A307261 - cp's OEIS frontend

A307261 Expansion of Product_{k>=1} 1/(1 - k*x^k/(1 - x)^k).

n	a(n)
0	1
1	1
2	4
3	13
4	42
5	130
6	397
7	1197
8	3566
9	10517
10	30760
11	89293
12	257397
13	737220
14	2099215
15	5945594
16	16756258
17	47004829
18	131286914
19	365203797
20	1012031772
21	2794446326
22	7690009600
23	21094325177
24	57687762889
25	157306741287
26	427777384499
27	1160250104637
28	3139067594584
29	8472525405830
30	22815639395641

[1, 1, 4, 13, 42, 130, 397, 1197, 3566, 10517, 30760, 89293, 257397, 737220, 2099215, 5945594, 16756258, 47004829, 131286914, 365203797, 1012031772, 2794446326, 7690009600, 21094325177, 57687762889, 157306741287, 427777384499, 1160250104637, 3139067594584, 8472525405830, 22815639395641]

cp's OEIS Frontend

A307261 Expansion of Product_{k>=1} 1/(1 - k*x^k/(1 - x)^k).

Table of values

List of values