A208544 - cp's OEIS frontend

A208544 T(n,k) = Number of n-bead necklaces of k colors allowing reversal, with no adjacent beads having the same color.

n	a(n)
1	1
2	2
3	0
4	3
5	1
6	0
7	4
8	3
9	0
10	0
11	5
12	6
13	1
14	1
15	0
16	6
17	10
18	4
19	6
20	0
21	0
22	7
23	15
24	10
25	21
26	3
27	1
28	0
29	8
30	21
31	20
32	55
33	24
34	13
35	0
36	0
37	9
38	28
39	35
40	120
41	102
42	92
43	9
44	1
45	0
46	10
47	36
48	56
49	231
50	312
51	430
52	156
53	30
54	0
55	0
56	11
57	45
58	84
59	406
60	777
61	1505
62	1170
63	498
64	29
65	1
66	0
67	12
68	55
69	120
70	666
71	1680
72	4291
73	5580
74	4435

[1, 2, 0, 3, 1, 0, 4, 3, 0, 0, 5, 6, 1, 1, 0, 6, 10, 4, 6, 0, 0, 7, 15, 10, 21, 3, 1, 0, 8, 21, 20, 55, 24, 13, 0, 0, 9, 28, 35, 120, 102, 92, 9, 1, 0, 10, 36, 56, 231, 312, 430, 156, 30, 0, 0, 11, 45, 84, 406, 777, 1505, 1170, 498, 29, 1, 0, 12, 55, 120, 666, 1680, 4291, 5580, 4435]

cp's OEIS Frontend

A208544 T(n,k) = Number of n-bead necklaces of k colors allowing reversal, with no adjacent beads having the same color.

Table of values

List of values