A370539 - cp's OEIS frontend

A370539 Expansion of g.f. (1 - xC(x)) (1 - xC(x^2)) / (1 - 4x), where C(x) = 1 + x*C(x)^2 is the Catalan function (A000108).

n	a(n)
0	1
1	2
2	8
3	30
4	118
5	462
6	1824
7	7208
8	28558
9	113274
10	449848
11	1787968
12	7111716
13	28303548
14	112700032
15	448939744
16	1788990454
17	7131191202
18	28433681832
19	113398298336
20	452345641820
21	1804739556100
22	7201621713568
23	28741559322464
24	114722405784428
25	457971605148996
26	1828422022584176

[1, 2, 8, 30, 118, 462, 1824, 7208, 28558, 113274, 449848, 1787968, 7111716, 28303548, 112700032, 448939744, 1788990454, 7131191202, 28433681832, 113398298336, 452345641820, 1804739556100, 7201621713568, 28741559322464, 114722405784428, 457971605148996, 1828422022584176]

cp's OEIS Frontend

A370539 Expansion of g.f. (1 - xC(x)) (1 - xC(x^2)) / (1 - 4x), where C(x) = 1 + x*C(x)^2 is the Catalan function (A000108).

Table of values

List of values

cp's OEIS Frontend

A370539 Expansion of g.f. (1 - x*C(x)) * (1 - x*C(x^2)) / (1 - 4*x), where C(x) = 1 + x*C(x)^2 is the Catalan function (A000108).

Table of values

List of values

A370539 Expansion of g.f. (1 - xC(x)) (1 - xC(x^2)) / (1 - 4x), where C(x) = 1 + x*C(x)^2 is the Catalan function (A000108).