A321388 - cp's OEIS frontend

A321388 Expansion of Product_{k>=1} (1 + x^k)^(k^(k-2)).

n	a(n)
0	1
1	1
2	1
3	4
4	19
5	144
6	1443
7	18295
8	280918
9	5069651
10	105147307
11	2464296222
12	64402891501
13	1856989724951
14	58560557062508
15	2004999890781363
16	74069439021212783
17	2936703201134924845
18	124383305232306494864
19	5605027085651919547476
20	267759074907470856179460
21	13516676464234372267564939

[1, 1, 1, 4, 19, 144, 1443, 18295, 280918, 5069651, 105147307, 2464296222, 64402891501, 1856989724951, 58560557062508, 2004999890781363, 74069439021212783, 2936703201134924845, 124383305232306494864, 5605027085651919547476, 267759074907470856179460, 13516676464234372267564939]

cp's OEIS Frontend

A321388 Expansion of Product_{k>=1} (1 + x^k)^(k^(k-2)).

Table of values

List of values