A069270 - cp's OEIS frontend

A069270 Third level generalization of Catalan triangle (0th level is Pascal's triangle A007318; first level is Catalan triangle A009766; 2nd level is A069269).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	4
6	1
7	3
8	9
9	22
10	1
11	4
12	15
13	52
14	140
15	1
16	5
17	22
18	91
19	340
20	969
21	1
22	6
23	30
24	140
25	612
26	2394
27	7084
28	1
29	7
30	39
31	200
32	969
33	4389
34	17710
35	53820
36	1
37	8
38	49
39	272
40	1425
41	7084
42	32890
43	135720
44	420732
45	1
46	9
47	60
48	357
49	1995
50	10626
51	53820
52	254475
53	1068012
54	3362260

[1, 1, 1, 1, 2, 4, 1, 3, 9, 22, 1, 4, 15, 52, 140, 1, 5, 22, 91, 340, 969, 1, 6, 30, 140, 612, 2394, 7084, 1, 7, 39, 200, 969, 4389, 17710, 53820, 1, 8, 49, 272, 1425, 7084, 32890, 135720, 420732, 1, 9, 60, 357, 1995, 10626, 53820, 254475, 1068012, 3362260]

cp's OEIS Frontend

A069270 Third level generalization of Catalan triangle (0th level is Pascal's triangle A007318; first level is Catalan triangle A009766; 2nd level is A069269).

Table of values

List of values