A004149 - cp's OEIS frontend

A004149 Generalized Catalan numbers: a(n+1) = a(n) + Sum_{k=2..n-1} a(k)*a(n-1-k).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	4
6	8
7	16
8	33
9	69
10	146
11	312
12	673
13	1463
14	3202
15	7050
16	15605
17	34705
18	77511
19	173779
20	390966
21	882376
22	1997211
23	4532593
24	10311720
25	23512376
26	53724350
27	122995968
28	282096693
29	648097855
30	1491322824
31	3436755328
32	7931085771

[1, 1, 1, 1, 2, 4, 8, 16, 33, 69, 146, 312, 673, 1463, 3202, 7050, 15605, 34705, 77511, 173779, 390966, 882376, 1997211, 4532593, 10311720, 23512376, 53724350, 122995968, 282096693, 648097855, 1491322824, 3436755328, 7931085771]

cp's OEIS Frontend

A004149 Generalized Catalan numbers: a(n+1) = a(n) + Sum_{k=2..n-1} a(k)*a(n-1-k).

Table of values

List of values