A071722 - cp's OEIS frontend

A071722 Expansion of (1+x^2C^2)C^3, where C = (1-(1-4x)^(1/2))/(2x) is g.f. for Catalan numbers, A000108.

n	a(n)
0	1
1	3
2	10
3	33
4	110
5	372
6	1276
7	4433
8	15574
9	55250
10	197676
11	712538
12	2585292
13	9434830
14	34610400
15	127553745
16	472055910
17	1753616370
18	6536826780
19	24443315550
20	91664179620
21	344655239760
22	1299052403688
23	4907335827258
24	18576824685820

[1, 3, 10, 33, 110, 372, 1276, 4433, 15574, 55250, 197676, 712538, 2585292, 9434830, 34610400, 127553745, 472055910, 1753616370, 6536826780, 24443315550, 91664179620, 344655239760, 1299052403688, 4907335827258, 18576824685820]

cp's OEIS Frontend

A071722 Expansion of (1+x^2C^2)C^3, 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

A071722 Expansion of (1+x^2*C^2)*C^3, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.

Table of values

List of values

A071722 Expansion of (1+x^2C^2)C^3, where C = (1-(1-4x)^(1/2))/(2x) is g.f. for Catalan numbers, A000108.