A330341 - cp's OEIS frontend

A330341 Triangle read by rows: T(n,k) is the number of n-bead bracelets using exactly k colors with no adjacent beads having the same color.

n	a(n)
1	0
2	0
3	1
4	0
5	0
6	1
7	0
8	1
9	3
10	3
11	0
12	0
13	3
14	12
15	12
16	0
17	1
18	10
19	46
20	90
21	60
22	0
23	0
24	9
25	120
26	480
27	720
28	360
29	0
30	1
31	27
32	384
33	2235
34	5670
35	6300
36	2520
37	0
38	0
39	29
40	980
41	9380
42	36960
43	68880
44	60480
45	20160
46	0
47	1
48	75
49	2904
50	38484
51	217152
52	604800
53	876960
54	635040
55	181440

[0, 0, 1, 0, 0, 1, 0, 1, 3, 3, 0, 0, 3, 12, 12, 0, 1, 10, 46, 90, 60, 0, 0, 9, 120, 480, 720, 360, 0, 1, 27, 384, 2235, 5670, 6300, 2520, 0, 0, 29, 980, 9380, 36960, 68880, 60480, 20160, 0, 1, 75, 2904, 38484, 217152, 604800, 876960, 635040, 181440]

cp's OEIS Frontend

A330341 Triangle read by rows: T(n,k) is the number of n-bead bracelets using exactly k colors with no adjacent beads having the same color.

Table of values

List of values