A071725 - cp's OEIS frontend

A071725 Expansion of (1+x^2C^4)C, where C = (1 - sqrt(1-4x))/(2x) is g.f. for Catalan numbers, A000108.

n	a(n)
0	1
1	1
2	3
3	10
4	34
5	117
6	407
7	1430
8	5070
9	18122
10	65246
11	236436
12	861764
13	3157325
14	11622015
15	42961470
16	159419670
17	593636670
18	2217608250
19	8308432140
20	31212003420
21	117544456770
22	443690433654
23	1678353186780
24	6361322162444

[1, 1, 3, 10, 34, 117, 407, 1430, 5070, 18122, 65246, 236436, 861764, 3157325, 11622015, 42961470, 159419670, 593636670, 2217608250, 8308432140, 31212003420, 117544456770, 443690433654, 1678353186780, 6361322162444]

cp's OEIS Frontend

A071725 Expansion of (1+x^2C^4)C, where C = (1 - sqrt(1-4x))/(2x) is g.f. for Catalan numbers, A000108.

Table of values

List of values

cp's OEIS Frontend

A071725 Expansion of (1+x^2*C^4)*C, where C = (1 - sqrt(1-4*x))/(2*x) is g.f. for Catalan numbers, A000108.

Table of values

List of values

A071725 Expansion of (1+x^2C^4)C, where C = (1 - sqrt(1-4x))/(2x) is g.f. for Catalan numbers, A000108.