A084781 - cp's OEIS frontend

A084781 G.f. A(x) satisfies A(x) = 1 + x(1+x+x^2)A(x)^2.

n	a(n)
0	1
1	1
2	3
3	10
4	35
5	132
6	519
7	2105
8	8746
9	37033
10	159229
11	693343
12	3051290
13	13550083
14	60642857
15	273248824
16	1238567263
17	5643738611
18	25837579578
19	118785766683
20	548182891007
21	2538522337214
22	11792272546723
23	54936210525388
24	256603469498039
25	1201486779137257

[1, 1, 3, 10, 35, 132, 519, 2105, 8746, 37033, 159229, 693343, 3051290, 13550083, 60642857, 273248824, 1238567263, 5643738611, 25837579578, 118785766683, 548182891007, 2538522337214, 11792272546723, 54936210525388, 256603469498039, 1201486779137257]

cp's OEIS Frontend

A084781 G.f. A(x) satisfies A(x) = 1 + x(1+x+x^2)A(x)^2.

Table of values

List of values

cp's OEIS Frontend

A084781 G.f. A(x) satisfies A(x) = 1 + x*(1+x+x^2)*A(x)^2.

Table of values

List of values

A084781 G.f. A(x) satisfies A(x) = 1 + x(1+x+x^2)A(x)^2.