A004148 - cp's OEIS frontend

A004148 Generalized Catalan numbers: a(n+1) = a(n) + Sum_{k=1..n-1} a(k)*a(n-1-k).

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	8
6	17
7	37
8	82
9	185
10	423
11	978
12	2283
13	5373
14	12735
15	30372
16	72832
17	175502
18	424748
19	1032004
20	2516347
21	6155441
22	15101701
23	37150472
24	91618049
25	226460893
26	560954047
27	1392251012
28	3461824644
29	8622571758
30	21511212261
31	53745962199
32	134474581374

[1, 1, 1, 2, 4, 8, 17, 37, 82, 185, 423, 978, 2283, 5373, 12735, 30372, 72832, 175502, 424748, 1032004, 2516347, 6155441, 15101701, 37150472, 91618049, 226460893, 560954047, 1392251012, 3461824644, 8622571758, 21511212261, 53745962199, 134474581374]

cp's OEIS Frontend

A004148 Generalized Catalan numbers: a(n+1) = a(n) + Sum_{k=1..n-1} a(k)*a(n-1-k).

Table of values

List of values