A301458 - cp's OEIS frontend

A301458 a(n) = [x^n] Product_{k>=1} 1/(1 - x^(k*(k+1)/2))^n.

n	a(n)
0	1
1	1
2	3
3	13
4	51
5	201
6	825
7	3431
8	14355
9	60493
10	256463
11	1092268
12	4669665
13	20029036
14	86148373
15	371434173
16	1604845715
17	6946936628
18	30121158813
19	130795358333
20	568709929191
21	2475778867547
22	10789659781640
23	47069225185789
24	205524447217185
25	898163031782576
26	3928112419640126

[1, 1, 3, 13, 51, 201, 825, 3431, 14355, 60493, 256463, 1092268, 4669665, 20029036, 86148373, 371434173, 1604845715, 6946936628, 30121158813, 130795358333, 568709929191, 2475778867547, 10789659781640, 47069225185789, 205524447217185, 898163031782576, 3928112419640126]

cp's OEIS Frontend

A301458 a(n) = [x^n] Product_{k>=1} 1/(1 - x^(k*(k+1)/2))^n.

Table of values

List of values