A338135 - cp's OEIS frontend

A338135 Irregular triangle read by rows: Row p gives number of non-overlapping clusters of 2q-plets joining 2p points on a circle, i.e., number of noncrossing partitions from A134264 with h_k for k odd replaced by zero.

n	a(n)
1	1
2	1
3	2
4	1
5	6
6	5
7	1
8	8
9	4
10	28
11	14
12	1
13	10
14	10
15	45
16	45
17	120
18	42
19	1
20	12
21	12
22	6
23	66
24	132
25	22
26	220
27	330
28	495
29	132
30	1
31	14
32	14
33	14
34	91
35	182
36	91
37	91
38	364
39	1092
40	364
41	1001
42	2002
43	2002
44	429

[1, 1, 2, 1, 6, 5, 1, 8, 4, 28, 14, 1, 10, 10, 45, 45, 120, 42, 1, 12, 12, 6, 66, 132, 22, 220, 330, 495, 132, 1, 14, 14, 14, 91, 182, 91, 91, 364, 1092, 364, 1001, 2002, 2002, 429]

cp's OEIS Frontend

A338135 Irregular triangle read by rows: Row p gives number of non-overlapping clusters of 2q-plets joining 2p points on a circle, i.e., number of noncrossing partitions from A134264 with h_k for k odd replaced by zero.

Table of values

List of values