A126087 - cp's OEIS frontend

A126087 Expansion of c(2x^2)/(1-xc(2x^2)), where c(x) = (1-sqrt(1-4x))/(2*x) is the g.f. of the Catalan numbers (A000108).

n	a(n)
0	1
1	1
2	3
3	5
4	15
5	29
6	87
7	181
8	543
9	1181
10	3543
11	7941
12	23823
13	54573
14	163719
15	381333
16	1143999
17	2699837
18	8099511
19	19319845
20	57959535
21	139480397
22	418441191
23	1014536117
24	3043608351
25	7426790749
26	22280372247
27	54669443141
28	164008329423

[1, 1, 3, 5, 15, 29, 87, 181, 543, 1181, 3543, 7941, 23823, 54573, 163719, 381333, 1143999, 2699837, 8099511, 19319845, 57959535, 139480397, 418441191, 1014536117, 3043608351, 7426790749, 22280372247, 54669443141, 164008329423]

cp's OEIS Frontend

A126087 Expansion of c(2x^2)/(1-xc(2x^2)), where c(x) = (1-sqrt(1-4x))/(2*x) is the g.f. of the Catalan numbers (A000108).

Table of values

List of values

cp's OEIS Frontend

A126087 Expansion of c(2*x^2)/(1-x*c(2*x^2)), where c(x) = (1-sqrt(1-4*x))/(2*x) is the g.f. of the Catalan numbers (A000108).

Table of values

List of values

A126087 Expansion of c(2x^2)/(1-xc(2x^2)), where c(x) = (1-sqrt(1-4x))/(2*x) is the g.f. of the Catalan numbers (A000108).