A307259 - cp's OEIS frontend

A307259 Expansion of (1/(1 - x)) * Product_{k>=1} (1 + k*x^k/(1 - x)^k).

n	a(n)
0	1
1	2
2	5
3	15
4	44
5	126
6	357
7	1003
8	2783
9	7618
10	20627
11	55421
12	148021
13	393140
14	1038123
15	2724992
16	7112022
17	18465708
18	47726767
19	122861732
20	315123476
21	805428727
22	2051556778
23	5207982062
24	13177117709
25	33235023381
26	83574705456
27	209576713721
28	524181331710
29	1307849984089
30	3255539133109

[1, 2, 5, 15, 44, 126, 357, 1003, 2783, 7618, 20627, 55421, 148021, 393140, 1038123, 2724992, 7112022, 18465708, 47726767, 122861732, 315123476, 805428727, 2051556778, 5207982062, 13177117709, 33235023381, 83574705456, 209576713721, 524181331710, 1307849984089, 3255539133109]

cp's OEIS Frontend

A307259 Expansion of (1/(1 - x)) * Product_{k>=1} (1 + k*x^k/(1 - x)^k).

Table of values

List of values