A071726 - cp's OEIS frontend

A071726 Expansion of (1+x^3C)C, where C = (1-(1-4x)^(1/2))/(2x) is g.f. for Catalan numbers, A000108.

n	a(n)
0	1
1	1
2	2
3	6
4	16
5	47
6	146
7	471
8	1562
9	5291
10	18226
11	63648
12	224808
13	801686
14	2882452
15	10437745
16	38032110
17	139339635
18	512996370
19	1896907980
20	7041759120
21	26233530210
22	98046684060
23	367525880670
24	1381386710964
25	5205006015102

[1, 1, 2, 6, 16, 47, 146, 471, 1562, 5291, 18226, 63648, 224808, 801686, 2882452, 10437745, 38032110, 139339635, 512996370, 1896907980, 7041759120, 26233530210, 98046684060, 367525880670, 1381386710964, 5205006015102]

cp's OEIS Frontend

A071726 Expansion of (1+x^3C)C, where C = (1-(1-4x)^(1/2))/(2x) is g.f. for Catalan numbers, A000108.

Table of values

List of values

cp's OEIS Frontend

A071726 Expansion of (1+x^3*C)*C, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.

Table of values

List of values

A071726 Expansion of (1+x^3C)C, where C = (1-(1-4x)^(1/2))/(2x) is g.f. for Catalan numbers, A000108.