A233436 - cp's OEIS frontend

A233436 a(n) = Sum_{k=0..n-1} [x^k] A(x)^(n-1) for n>=1 with a(0)=1, where g.f. A(x) = Sum_{n>=0} a(n)*x^n.

n	a(n)
0	1
1	1
2	2
3	8
4	50
5	424
6	4472
7	55760
8	797022
9	12801296
10	227829866
11	4446822688
12	94422531876
13	2166975912496
14	53457972027254
15	1410960809766320
16	39680975219789210
17	1184783226216138592
18	37434788449030871076
19	1248022160663960432264
20	43785432805297352937954
21	1612690422384099635004264

[1, 1, 2, 8, 50, 424, 4472, 55760, 797022, 12801296, 227829866, 4446822688, 94422531876, 2166975912496, 53457972027254, 1410960809766320, 39680975219789210, 1184783226216138592, 37434788449030871076, 1248022160663960432264, 43785432805297352937954, 1612690422384099635004264]

cp's OEIS Frontend

A233436 a(n) = Sum_{k=0..n-1} [x^k] A(x)^(n-1) for n>=1 with a(0)=1, where g.f. A(x) = Sum_{n>=0} a(n)*x^n.

Table of values

List of values