A333482 - cp's OEIS frontend

A333482 a(n) = [x^(2n)] S(x)^n, where S(x) = (1 - x - sqrt(1 - 6x + x^2))/(2*x) is the o.g.f. of the large Schröder numbers A006318.

n	a(n)
0	1
1	6
2	304
3	17718
4	1093760
5	69690006
6	4530426640
7	298634382374
8	19886739416064
9	1334658881073894
10	90125657301992304
11	6116315760393531094
12	416791616968522726784
13	28500344434239455360758
14	1954614576511349850157392
15	134392738169746273774331718
16	9260873342398000417556078592

[1, 6, 304, 17718, 1093760, 69690006, 4530426640, 298634382374, 19886739416064, 1334658881073894, 90125657301992304, 6116315760393531094, 416791616968522726784, 28500344434239455360758, 1954614576511349850157392, 134392738169746273774331718, 9260873342398000417556078592]

cp's OEIS Frontend

A333482 a(n) = [x^(2n)] S(x)^n, where S(x) = (1 - x - sqrt(1 - 6x + x^2))/(2*x) is the o.g.f. of the large Schröder numbers A006318.

Table of values

List of values

cp's OEIS Frontend

A333482 a(n) = [x^(2*n)] S(x)^n, where S(x) = (1 - x - sqrt(1 - 6*x + x^2))/(2*x) is the o.g.f. of the large Schröder numbers A006318.

Table of values

List of values

A333482 a(n) = [x^(2n)] S(x)^n, where S(x) = (1 - x - sqrt(1 - 6x + x^2))/(2*x) is the o.g.f. of the large Schröder numbers A006318.