A071747 - cp's OEIS frontend

A071747 Expansion of (1+x^4C^2)C^2, where C = (1-(1-4x)^(1/2))/(2x) is g.f. for Catalan numbers, A000108.

n	a(n)
0	1
1	2
2	5
3	14
4	43
5	136
6	443
7	1478
8	5027
9	17368
10	60788
11	215084
12	768094
13	2764880
14	10021721
15	36546310
16	133990755
17	493606680
18	1826192640
19	6782469540
20	25278252810
21	94512157680
22	354397639830
23	1332454176924
24	5022040887822

[1, 2, 5, 14, 43, 136, 443, 1478, 5027, 17368, 60788, 215084, 768094, 2764880, 10021721, 36546310, 133990755, 493606680, 1826192640, 6782469540, 25278252810, 94512157680, 354397639830, 1332454176924, 5022040887822]

cp's OEIS Frontend

A071747 Expansion of (1+x^4C^2)C^2, 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

A071747 Expansion of (1+x^4*C^2)*C^2, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.

Table of values

List of values

A071747 Expansion of (1+x^4C^2)C^2, where C = (1-(1-4x)^(1/2))/(2x) is g.f. for Catalan numbers, A000108.