A258349 - cp's OEIS frontend

A258349 Expansion of Product_{k>=1} 1/(1-x^k)^(k*(k-1)/2).

n	a(n)
0	1
1	0
2	1
3	3
4	7
5	13
6	28
7	52
8	107
9	203
10	396
11	741
12	1409
13	2596
14	4813
15	8777
16	15972
17	28737
18	51553
19	91644
20	162288
21	285377
22	499653
23	869758
24	1507615
25	2599974
26	4465606
27	7635607
28	13005252
29	22061424
30	37287395
31	62788012
32	105365891
33	176211393
34	293741195
35	488101711
36	808604106

[1, 0, 1, 3, 7, 13, 28, 52, 107, 203, 396, 741, 1409, 2596, 4813, 8777, 15972, 28737, 51553, 91644, 162288, 285377, 499653, 869758, 1507615, 2599974, 4465606, 7635607, 13005252, 22061424, 37287395, 62788012, 105365891, 176211393, 293741195, 488101711, 808604106]

cp's OEIS Frontend

A258349 Expansion of Product_{k>=1} 1/(1-x^k)^(k*(k-1)/2).

Table of values

List of values