A023431 - cp's OEIS frontend

A023431 Generalized Catalan Numbers x^3A(x)^2 + (x-1)A(x) + 1 =0.

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	7
6	13
7	26
8	52
9	104
10	212
11	438
12	910
13	1903
14	4009
15	8494
16	18080
17	38656
18	82988
19	178802
20	386490
21	837928
22	1821664
23	3970282
24	8673258
25	18987930
26	41652382
27	91539466
28	201525238
29	444379907
30	981384125
31	2170416738
32	4806513660

[1, 1, 1, 2, 4, 7, 13, 26, 52, 104, 212, 438, 910, 1903, 4009, 8494, 18080, 38656, 82988, 178802, 386490, 837928, 1821664, 3970282, 8673258, 18987930, 41652382, 91539466, 201525238, 444379907, 981384125, 2170416738, 4806513660]

cp's OEIS Frontend

A023431 Generalized Catalan Numbers x^3A(x)^2 + (x-1)A(x) + 1 =0.

Table of values

List of values

cp's OEIS Frontend

A023431 Generalized Catalan Numbers x^3*A(x)^2 + (x-1)*A(x) + 1 =0.

Table of values

List of values

A023431 Generalized Catalan Numbers x^3A(x)^2 + (x-1)A(x) + 1 =0.