A378668 - cp's OEIS frontend

A378668 G.f. A(x) satisfies A(x) = 1/( 1 - xA(x)^2/(1 - xA(x)^2) )^2.

n	a(n)
0	1
1	2
2	13
3	112
4	1104
5	11778
6	132374
7	1543740
8	18505996
9	226632616
10	2823110349
11	35659080952
12	455652487060
13	5879489288828
14	76502741016012
15	1002670573618324
16	13224761472453756
17	175404372357915096
18	2338003752387818372
19	31302169754776944512
20	420760252068869028028

[1, 2, 13, 112, 1104, 11778, 132374, 1543740, 18505996, 226632616, 2823110349, 35659080952, 455652487060, 5879489288828, 76502741016012, 1002670573618324, 13224761472453756, 175404372357915096, 2338003752387818372, 31302169754776944512, 420760252068869028028]

cp's OEIS Frontend

A378668 G.f. A(x) satisfies A(x) = 1/( 1 - xA(x)^2/(1 - xA(x)^2) )^2.

Table of values

List of values

cp's OEIS Frontend

A378668 G.f. A(x) satisfies A(x) = 1/( 1 - x*A(x)^2/(1 - x*A(x)^2) )^2.

Table of values

List of values

A378668 G.f. A(x) satisfies A(x) = 1/( 1 - xA(x)^2/(1 - xA(x)^2) )^2.