A207556 - cp's OEIS frontend

A207556 G.f.: Sum_{n>=0} (1+x)^n * Product_{k=1..n} ((1+x)^k - 1).

n	a(n)
0	1
1	1
2	3
3	11
4	55
5	339
6	2499
7	21433
8	209717
9	2305719
10	28141925
11	377579731
12	5523750291
13	87508680045
14	1492510215135
15	27266981038343
16	531245913925837
17	10995334516297279
18	240925208376757203
19	5571653169126500083
20	135617881389268715939
21	3465772763274106884733

[1, 1, 3, 11, 55, 339, 2499, 21433, 209717, 2305719, 28141925, 377579731, 5523750291, 87508680045, 1492510215135, 27266981038343, 531245913925837, 10995334516297279, 240925208376757203, 5571653169126500083, 135617881389268715939, 3465772763274106884733]

cp's OEIS Frontend

A207556 G.f.: Sum_{n>=0} (1+x)^n * Product_{k=1..n} ((1+x)^k - 1).

Table of values

List of values