A369517 - cp's OEIS frontend

A369517 a(n) = [x^(n^4)] Product_{k=1..n} (x^(k^4) + 1 + 1/x^(k^4)).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	3
11	9
12	20
13	43
14	85
15	183
16	394
17	1010
18	2254
19	5589
20	12383
21	31226
22	71153
23	182382
24	426055
25	1105686
26	2615167
27	6906858
28	16607500
29	44276140
30	107836782
31	290059089
32	715361182
33	1937639649
34	4829754357
35	13160903826
36	33112002835
37	90800047879

[1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 9, 20, 43, 85, 183, 394, 1010, 2254, 5589, 12383, 31226, 71153, 182382, 426055, 1105686, 2615167, 6906858, 16607500, 44276140, 107836782, 290059089, 715361182, 1937639649, 4829754357, 13160903826, 33112002835, 90800047879]

cp's OEIS Frontend

A369517 a(n) = [x^(n^4)] Product_{k=1..n} (x^(k^4) + 1 + 1/x^(k^4)).

Table of values

List of values