A071735 - cp's OEIS frontend

A071735 Expansion of (1+x^3C^3)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	15
4	47
5	152
6	504
7	1705
8	5863
9	20436
10	72046
11	256462
12	920550
13	3328192
14	12109270
15	44305245
16	162911415
17	601700700
18	2231255070
19	8304089970
20	31007435970
21	116130446640
22	436137803400
23	1642112017338
24	6197239974582
25	23438771087272
26	88826989017004
27	337262603824860

[1, 2, 5, 15, 47, 152, 504, 1705, 5863, 20436, 72046, 256462, 920550, 3328192, 12109270, 44305245, 162911415, 601700700, 2231255070, 8304089970, 31007435970, 116130446640, 436137803400, 1642112017338, 6197239974582, 23438771087272, 88826989017004, 337262603824860]

cp's OEIS Frontend

A071735 Expansion of (1+x^3C^3)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

A071735 Expansion of (1+x^3*C^3)*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

A071735 Expansion of (1+x^3C^3)C^2, where C = (1-(1-4x)^(1/2))/(2x) is g.f. for Catalan numbers, A000108.