A307875 - cp's OEIS frontend

A307875 G.f. A(x) satisfies: A(x) = 1 + x(1 + xA(x/(1 - x)^2)/(1 - x)^2).

n	a(n)
0	1
1	1
2	1
3	3
4	8
5	23
6	78
7	308
8	1343
9	6288
10	31520
11	169556
12	976219
13	5974381
14	38597158
15	262016556
16	1864047379
17	13870571346
18	107732190252
19	871392244426
20	7323432971279
21	63823847508765
22	575833492837041
23	5370836704825787
24	51720220231890625
25	513595474725399215
26	5253091234710411001

[1, 1, 1, 3, 8, 23, 78, 308, 1343, 6288, 31520, 169556, 976219, 5974381, 38597158, 262016556, 1864047379, 13870571346, 107732190252, 871392244426, 7323432971279, 63823847508765, 575833492837041, 5370836704825787, 51720220231890625, 513595474725399215, 5253091234710411001]

cp's OEIS Frontend

A307875 G.f. A(x) satisfies: A(x) = 1 + x(1 + xA(x/(1 - x)^2)/(1 - x)^2).

Table of values

List of values

cp's OEIS Frontend

A307875 G.f. A(x) satisfies: A(x) = 1 + x*(1 + x*A(x/(1 - x)^2)/(1 - x)^2).

Table of values

List of values

A307875 G.f. A(x) satisfies: A(x) = 1 + x(1 + xA(x/(1 - x)^2)/(1 - x)^2).