A209805 - cp's OEIS frontend

A209805 Triangle read by rows: T(n,k) is the number of k-block noncrossing partitions of n-set up to rotations.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	2
10	1
11	1
12	2
13	4
14	2
15	1
16	1
17	3
18	10
19	10
20	3
21	1
22	1
23	3
24	15
25	25
26	15
27	3
28	1
29	1
30	4
31	26
32	64
33	64
34	26
35	4
36	1
37	1
38	4
39	38
40	132
41	196
42	132
43	38
44	4
45	1
46	1
47	5
48	56
49	256
50	536
51	536
52	256
53	56
54	5
55	1
56	1
57	5
58	75
59	450
60	1260
61	1764
62	1260
63	450
64	75
65	5
66	1

[1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 4, 2, 1, 1, 3, 10, 10, 3, 1, 1, 3, 15, 25, 15, 3, 1, 1, 4, 26, 64, 64, 26, 4, 1, 1, 4, 38, 132, 196, 132, 38, 4, 1, 1, 5, 56, 256, 536, 536, 256, 56, 5, 1, 1, 5, 75, 450, 1260, 1764, 1260, 450, 75, 5, 1]

cp's OEIS Frontend

A209805 Triangle read by rows: T(n,k) is the number of k-block noncrossing partitions of n-set up to rotations.

Table of values

List of values