A345244 - cp's OEIS frontend

A345244 G.f. A(x) satisfies: A(x) = x + x^2 * exp(3 * Sum_{k>=1} (-1)^(k+1) * A(x^k) / k).

n	a(n)
1	1
2	1
3	3
4	6
5	19
6	57
7	177
8	586
9	1950
10	6642
11	22990
12	80400
13	284346
14	1014237
15	3644841
16	13185810
17	47976382
18	175458798
19	644630064
20	2378084209
21	8805524949
22	32714828733
23	121917589291
24	455625246297
25	1707142362234
26	6411576477380
27	24133229559243
28	91023263056629
29	343964618949140
30	1302098673500514

[1, 1, 3, 6, 19, 57, 177, 586, 1950, 6642, 22990, 80400, 284346, 1014237, 3644841, 13185810, 47976382, 175458798, 644630064, 2378084209, 8805524949, 32714828733, 121917589291, 455625246297, 1707142362234, 6411576477380, 24133229559243, 91023263056629, 343964618949140, 1302098673500514]

cp's OEIS Frontend

A345244 G.f. A(x) satisfies: A(x) = x + x^2 * exp(3 * Sum_{k>=1} (-1)^(k+1) * A(x^k) / k).

Table of values

List of values