A351342 - cp's OEIS frontend

A351342 G.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3 * A(x/(1 - 2x)) / (1 - 2x).

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	9
6	27
7	83
8	271
9	971
10	3865
11	16879
12	78985
13	388385
14	1987201
15	10561385
16	58443891
17	337724057
18	2040085491
19	12862712499
20	84357800063
21	573182197539
22	4021203303593
23	29062345301487
24	216129411635057
25	1653180368063361
26	13003920016983361
27	105158133803473329

[1, 1, 1, 1, 3, 9, 27, 83, 271, 971, 3865, 16879, 78985, 388385, 1987201, 10561385, 58443891, 337724057, 2040085491, 12862712499, 84357800063, 573182197539, 4021203303593, 29062345301487, 216129411635057, 1653180368063361, 13003920016983361, 105158133803473329]

cp's OEIS Frontend

A351342 G.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3 * A(x/(1 - 2x)) / (1 - 2x).

Table of values

List of values

cp's OEIS Frontend

A351342 G.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3 * A(x/(1 - 2*x)) / (1 - 2*x).

Table of values

List of values

A351342 G.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3 * A(x/(1 - 2x)) / (1 - 2x).