A320932 - cp's OEIS frontend

A320932 a(n) = [x^(n(n+1)/2)] Product_{k=1..n} Sum_{m>=0} x^(km^2).

n	a(n)
0	1
1	1
2	1
3	2
4	2
5	6
6	20
7	51
8	141
9	381
10	1001
11	2796
12	7861
13	22306
14	64129
15	185692
16	540468
17	1585246
18	4674464
19	13846636
20	41216933
21	123176849
22	369410571
23	1111661833
24	3355466306
25	10156304314
26	30821794651
27	93761053797
28	285859742756
29	873355481467
30	2673455511946
31	8198687383812

[1, 1, 1, 2, 2, 6, 20, 51, 141, 381, 1001, 2796, 7861, 22306, 64129, 185692, 540468, 1585246, 4674464, 13846636, 41216933, 123176849, 369410571, 1111661833, 3355466306, 10156304314, 30821794651, 93761053797, 285859742756, 873355481467, 2673455511946, 8198687383812]

cp's OEIS Frontend

A320932 a(n) = [x^(n(n+1)/2)] Product_{k=1..n} Sum_{m>=0} x^(km^2).

Table of values

List of values

cp's OEIS Frontend

A320932 a(n) = [x^(n*(n+1)/2)] Product_{k=1..n} Sum_{m>=0} x^(k*m^2).

Table of values

List of values

A320932 a(n) = [x^(n(n+1)/2)] Product_{k=1..n} Sum_{m>=0} x^(km^2).