A199874 - cp's OEIS frontend

A199874 G.f. satisfies A(x) = (1 + xA(x)^2)(1 + x^2*A(x)^2).

n	a(n)
0	1
1	1
2	3
3	10
4	37
5	147
6	611
7	2625
8	11564
9	51953
10	237123
11	1096420
12	5125063
13	24178427
14	114974387
15	550511901
16	2651896733
17	12843003108
18	62494595022
19	305400429548
20	1498184696271
21	7375179807191
22	36421312544431
23	180383163330765
24	895756907248150
25	4459095182031675
26	22247684478181317

[1, 1, 3, 10, 37, 147, 611, 2625, 11564, 51953, 237123, 1096420, 5125063, 24178427, 114974387, 550511901, 2651896733, 12843003108, 62494595022, 305400429548, 1498184696271, 7375179807191, 36421312544431, 180383163330765, 895756907248150, 4459095182031675, 22247684478181317]

cp's OEIS Frontend

A199874 G.f. satisfies A(x) = (1 + xA(x)^2)(1 + x^2*A(x)^2).

Table of values

List of values

cp's OEIS Frontend

A199874 G.f. satisfies A(x) = (1 + x*A(x)^2)*(1 + x^2*A(x)^2).

Table of values

List of values

A199874 G.f. satisfies A(x) = (1 + xA(x)^2)(1 + x^2*A(x)^2).