A251691 - cp's OEIS frontend

A251691 G.f.: G(F(x)) is a power series in x consisting entirely of positive integer coefficients such that G(F(x) - x^k) has negative coefficients for k>0, where G(x) = 1 + x*G(x)^3 is the g.f. of A001764 and F(x) is g.f. of A251690.

n	a(n)
0	1
1	1
2	2
3	4
4	8
5	17
6	36
7	78
8	169
9	370
10	813
11	1793
12	3971
13	8817
14	19631
15	43804
16	97938
17	219357
18	492072
19	1105398
20	2486320
21	5598805
22	12620832
23	28477139
24	64311189
25	145354456
26	328772330
27	744155150
28	1685434388
29	3819629781
30	8661130303
31	19649713303
32	44601771038
33	101285994072
34	230110466746

[1, 1, 2, 4, 8, 17, 36, 78, 169, 370, 813, 1793, 3971, 8817, 19631, 43804, 97938, 219357, 492072, 1105398, 2486320, 5598805, 12620832, 28477139, 64311189, 145354456, 328772330, 744155150, 1685434388, 3819629781, 8661130303, 19649713303, 44601771038, 101285994072, 230110466746]

cp's OEIS Frontend

A251691 G.f.: G(F(x)) is a power series in x consisting entirely of positive integer coefficients such that G(F(x) - x^k) has negative coefficients for k>0, where G(x) = 1 + x*G(x)^3 is the g.f. of A001764 and F(x) is g.f. of A251690.

Table of values

List of values