A087224 - cp's OEIS frontend

A087224 G.f. satisfies A(x) = f(x)^2 + xA(x)f(x)^3, where f(x) = Sum_{k>=0} x^((4^k-1)/3).

n	a(n)
0	1
1	3
2	7
3	19
4	50
5	133
6	352
7	935
8	2482
9	6584
10	17473
11	46365
12	123034
13	326478
14	866338
15	2298895
16	6100296
17	16187616
18	42955106
19	113984740
20	302467434
21	802621041
22	2129817812
23	5651638433
24	14997065388
25	39795888008
26	105601506802

[1, 3, 7, 19, 50, 133, 352, 935, 2482, 6584, 17473, 46365, 123034, 326478, 866338, 2298895, 6100296, 16187616, 42955106, 113984740, 302467434, 802621041, 2129817812, 5651638433, 14997065388, 39795888008, 105601506802]

cp's OEIS Frontend

A087224 G.f. satisfies A(x) = f(x)^2 + xA(x)f(x)^3, where f(x) = Sum_{k>=0} x^((4^k-1)/3).

Table of values

List of values

cp's OEIS Frontend

A087224 G.f. satisfies A(x) = f(x)^2 + x*A(x)*f(x)^3, where f(x) = Sum_{k>=0} x^((4^k-1)/3).

Table of values

List of values

A087224 G.f. satisfies A(x) = f(x)^2 + xA(x)f(x)^3, where f(x) = Sum_{k>=0} x^((4^k-1)/3).