A157312 - cp's OEIS frontend

A157312 G.f.: A(x) = exp(Sum_{n>=1} A157311(n)x^n/n) = Product_{n>=1} (1 + A157311(n-1)x^n).

n	a(n)
0	1
1	1
2	1
3	2
4	5
5	18
6	84
7	481
8	3249
9	25359
10	224000
11	2208441
12	24019991
13	285633470
14	3685413373
15	51271476627
16	764944009086
17	12182390286127
18	206262410584138
19	3699483818281188
20	70067511789111404
21	1397379232420943285

[1, 1, 1, 2, 5, 18, 84, 481, 3249, 25359, 224000, 2208441, 24019991, 285633470, 3685413373, 51271476627, 764944009086, 12182390286127, 206262410584138, 3699483818281188, 70067511789111404, 1397379232420943285]

cp's OEIS Frontend

A157312 G.f.: A(x) = exp(Sum_{n>=1} A157311(n)x^n/n) = Product_{n>=1} (1 + A157311(n-1)x^n).

Table of values

List of values

cp's OEIS Frontend

A157312 G.f.: A(x) = exp(Sum_{n>=1} A157311(n)*x^n/n) = Product_{n>=1} (1 + A157311(n-1)*x^n).

Table of values

List of values

A157312 G.f.: A(x) = exp(Sum_{n>=1} A157311(n)x^n/n) = Product_{n>=1} (1 + A157311(n-1)x^n).