A320525 - cp's OEIS frontend

A320525 Triangle read by rows: T(n,k) = number of chiral pairs of color patterns (set partitions) in a row of length n using exactly k colors (subsets).

n	a(n)
1	0
2	0
3	0
4	0
5	1
6	0
7	0
8	2
9	2
10	0
11	0
12	6
13	10
14	4
15	0
16	0
17	12
18	40
19	28
20	6
21	0
22	0
23	28
24	141
25	167
26	64
27	9
28	0
29	0
30	56
31	464
32	824
33	508
34	124
35	12
36	0
37	0
38	120
39	1480
40	3840
41	3428
42	1300
43	220
44	16
45	0
46	0
47	240
48	4600
49	16920
50	21132
51	11316
52	2900
53	360
54	20
55	0
56	0
57	496
58	14145
59	72655
60	123050
61	89513
62	31846
63	5890
64	560
65	25
66	0
67	0
68	992
69	43052
70	305140
71	688850
72	660978
73	313190
74	79256
75	11060
76	830
77	30
78	0

[0, 0, 0, 0, 1, 0, 0, 2, 2, 0, 0, 6, 10, 4, 0, 0, 12, 40, 28, 6, 0, 0, 28, 141, 167, 64, 9, 0, 0, 56, 464, 824, 508, 124, 12, 0, 0, 120, 1480, 3840, 3428, 1300, 220, 16, 0, 0, 240, 4600, 16920, 21132, 11316, 2900, 360, 20, 0, 0, 496, 14145, 72655, 123050, 89513, 31846, 5890, 560, 25, 0, 0, 992, 43052, 305140, 688850, 660978, 313190, 79256, 11060, 830, 30, 0]

cp's OEIS Frontend

A320525 Triangle read by rows: T(n,k) = number of chiral pairs of color patterns (set partitions) in a row of length n using exactly k colors (subsets).

Table of values

List of values