A321238 - cp's OEIS frontend

A321238 a(n) = [x^(n^3)] Product_{k=1..n} Sum_{m>=0} x^(k*m^2).

n	a(n)
0	1
1	1
2	1
3	4
4	16
5	87
6	911
7	8081
8	82494
9	1108584
10	14559487
11	206462480
12	3300362073
13	54235076625
14	939612600043
15	17366394088532
16	332129019947772
17	6615538793829307
18	137564490944940832
19	2954281836759475893
20	65572183746807351880
21	1503752010271535590284
22	35476544827929325305961

[1, 1, 1, 4, 16, 87, 911, 8081, 82494, 1108584, 14559487, 206462480, 3300362073, 54235076625, 939612600043, 17366394088532, 332129019947772, 6615538793829307, 137564490944940832, 2954281836759475893, 65572183746807351880, 1503752010271535590284, 35476544827929325305961]

cp's OEIS Frontend

A321238 a(n) = [x^(n^3)] Product_{k=1..n} Sum_{m>=0} x^(k*m^2).

Table of values

List of values