A343361 - cp's OEIS frontend

A343361 Expansion of Product_{k>=1} (1 + x^k)^(4^(k-1)).

n	a(n)
0	1
1	1
2	4
3	20
4	86
5	390
6	1724
7	7644
8	33697
9	148401
10	651584
11	2855840
12	12491276
13	54540636
14	237733768
15	1034610232
16	4495832776
17	19508749928
18	84540638312
19	365888222552
20	1581630245756
21	6829047398156
22	29453496620000
23	126898489491904
24	546183557447366
25	2348560270762006
26	10089340886428928

[1, 1, 4, 20, 86, 390, 1724, 7644, 33697, 148401, 651584, 2855840, 12491276, 54540636, 237733768, 1034610232, 4495832776, 19508749928, 84540638312, 365888222552, 1581630245756, 6829047398156, 29453496620000, 126898489491904, 546183557447366, 2348560270762006, 10089340886428928]

cp's OEIS Frontend

A343361 Expansion of Product_{k>=1} (1 + x^k)^(4^(k-1)).

Table of values

List of values