A157311 - cp's OEIS frontend

A157311 G.f.: exp( Sum_{n>=1} a(n)x^n/n ) = Product_{n>=1} (1 + a(n-1)x^n).

n	a(n)
0	1
1	1
2	1
3	4
4	13
5	66
6	394
7	2759
8	22005
9	198049
10	1979646
11	21776107
12	261287398
13	3396736175
14	47553219799
15	713298307974
16	11412712029909
17	194016104508454
18	3492285524896921
19	66353424973041500
20	1327068107226627278
21	27868430252187313730
22	613105422439139763585

[1, 1, 1, 4, 13, 66, 394, 2759, 22005, 198049, 1979646, 21776107, 261287398, 3396736175, 47553219799, 713298307974, 11412712029909, 194016104508454, 3492285524896921, 66353424973041500, 1327068107226627278, 27868430252187313730, 613105422439139763585]

cp's OEIS Frontend

A157311 G.f.: exp( Sum_{n>=1} a(n)x^n/n ) = Product_{n>=1} (1 + a(n-1)x^n).

Table of values

List of values

cp's OEIS Frontend

A157311 G.f.: exp( Sum_{n>=1} a(n)*x^n/n ) = Product_{n>=1} (1 + a(n-1)*x^n).

Table of values

List of values

A157311 G.f.: exp( Sum_{n>=1} a(n)x^n/n ) = Product_{n>=1} (1 + a(n-1)x^n).