A071719 - cp's OEIS frontend

A071719 Expansion of (1+x^2C)C^4, where C = (1-(1-4x)^(1/2))/(2x) is g.f. for Catalan numbers, A000108.

n	a(n)
0	1
1	4
2	15
3	53
4	185
5	647
6	2277
7	8073
8	28834
9	103700
10	375326
11	1366290
12	4999717
13	18382405
14	67877025
15	251615745
16	936047790
17	3493585920
18	13077995730
19	49091198550
20	184742369370
21	696863109774
22	2634345976818
23	9978753842378

[1, 4, 15, 53, 185, 647, 2277, 8073, 28834, 103700, 375326, 1366290, 4999717, 18382405, 67877025, 251615745, 936047790, 3493585920, 13077995730, 49091198550, 184742369370, 696863109774, 2634345976818, 9978753842378]

cp's OEIS Frontend

A071719 Expansion of (1+x^2C)C^4, 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

A071719 Expansion of (1+x^2*C)*C^4, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.

Table of values

List of values

A071719 Expansion of (1+x^2C)C^4, where C = (1-(1-4x)^(1/2))/(2x) is g.f. for Catalan numbers, A000108.