A360479 - cp's OEIS frontend

A360479 Expansion of Sum_{k>=0} (x * (1 + (k * x)^2))^k.

n	a(n)
0	1
1	1
2	1
3	2
4	9
5	28
6	81
7	369
8	1753
9	7323
10	36337
11	207401
12	1114345
13	6308368
14	40326033
15	256982157
16	1658573497
17	11650405774
18	83966740913
19	608348063576
20	4659734909385
21	36973835868521
22	295709600709585
23	2454457098977559
24	21106884235025305

[1, 1, 1, 2, 9, 28, 81, 369, 1753, 7323, 36337, 207401, 1114345, 6308368, 40326033, 256982157, 1658573497, 11650405774, 83966740913, 608348063576, 4659734909385, 36973835868521, 295709600709585, 2454457098977559, 21106884235025305]

cp's OEIS Frontend

A360479 Expansion of Sum_{k>=0} (x * (1 + (k * x)^2))^k.

Table of values

List of values