A333473 - cp's OEIS frontend

A333473 a(n) = [x^n] ( S(x/(1 + x)) )^n, where S(x) = (1 - x - sqrt(1 - 6x + x^2))/(2x) is the o.g.f. of the large Schröder numbers A006318.

n	a(n)
0	1
1	2
2	12
3	92
4	752
5	6352
6	54768
7	478928
8	4231424
9	37680320
10	337622912
11	3040354176
12	27492359936
13	249463806464
14	2270319909632
15	20714443816192
16	189418898063360
17	1735482632719360
18	15928224355854336
19	146414296847992832
20	1347721096376573952
21	12421053168197722112

[1, 2, 12, 92, 752, 6352, 54768, 478928, 4231424, 37680320, 337622912, 3040354176, 27492359936, 249463806464, 2270319909632, 20714443816192, 189418898063360, 1735482632719360, 15928224355854336, 146414296847992832, 1347721096376573952, 12421053168197722112]

cp's OEIS Frontend

A333473 a(n) = [x^n] ( S(x/(1 + x)) )^n, where S(x) = (1 - x - sqrt(1 - 6x + x^2))/(2x) is the o.g.f. of the large Schröder numbers A006318.

Table of values

List of values

cp's OEIS Frontend

A333473 a(n) = [x^n] ( S(x/(1 + 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

A333473 a(n) = [x^n] ( S(x/(1 + x)) )^n, where S(x) = (1 - x - sqrt(1 - 6x + x^2))/(2x) is the o.g.f. of the large Schröder numbers A006318.