A298987 - cp's OEIS frontend

A298987 a(n) = [x^n] Product_{k>=1} (1 + n*x^k)^k.

n	a(n)
0	1
1	1
2	4
3	27
4	80
5	400
6	1908
7	6223
8	31296
9	116478
10	450100
11	1828915
12	7360848
13	26906828
14	95776772
15	403908975
16	1421758720
17	5072014447
18	18481180644
19	68350964211
20	246180936400
21	827642046294
22	2958748580084
23	10294629775620
24	36607347335232
25	120800714172500
26	407951731319860
27	1405943613730899

[1, 1, 4, 27, 80, 400, 1908, 6223, 31296, 116478, 450100, 1828915, 7360848, 26906828, 95776772, 403908975, 1421758720, 5072014447, 18481180644, 68350964211, 246180936400, 827642046294, 2958748580084, 10294629775620, 36607347335232, 120800714172500, 407951731319860, 1405943613730899]

cp's OEIS Frontend

A298987 a(n) = [x^n] Product_{k>=1} (1 + n*x^k)^k.

Table of values

List of values