A106228 - cp's OEIS frontend

A106228 G.f. satisfies A(x) = 1 + xA(x)/(1 - xA(x)^2).

n	a(n)
0	1
1	1
2	2
3	6
4	21
5	80
6	322
7	1347
8	5798
9	25512
10	114236
11	518848
12	2384538
13	11068567
14	51817118
15	244370806
16	1159883685
17	5536508864
18	26560581688
19	127993221140
20	619280193640
21	3007251366000
22	14651743202152
23	71601107803904
24	350873710447210
25	1723795243004223

[1, 1, 2, 6, 21, 80, 322, 1347, 5798, 25512, 114236, 518848, 2384538, 11068567, 51817118, 244370806, 1159883685, 5536508864, 26560581688, 127993221140, 619280193640, 3007251366000, 14651743202152, 71601107803904, 350873710447210, 1723795243004223]

cp's OEIS Frontend

A106228 G.f. satisfies A(x) = 1 + xA(x)/(1 - xA(x)^2).

Table of values

List of values

cp's OEIS Frontend

A106228 G.f. satisfies A(x) = 1 + x*A(x)/(1 - x*A(x)^2).

Table of values

List of values

A106228 G.f. satisfies A(x) = 1 + xA(x)/(1 - xA(x)^2).