A209344 - cp's OEIS frontend

A209344 T(n,k) is the number of n-bead necklaces labeled with numbers -k..k allowing reversal, with sum zero with no three beads in a row equal.

n	a(n)
1	1
2	1
3	2
4	1
5	3
6	1
7	1
8	4
9	4
10	4
11	1
12	5
13	7
14	15
15	5
16	1
17	6
18	12
19	35
20	40
21	14
22	1
23	7
24	17
25	72
26	145
27	146
28	21
29	1
30	8
31	24
32	128
33	400
34	770
35	514
36	51
37	1
38	9
39	31
40	205
41	883
42	2698
43	4029
44	2032
45	102
46	1
47	10
48	40
49	311
50	1724
51	7358
52	18646
53	22739
54	8076
55	249
56	1
57	11
58	49
59	448
60	3045
61	16968
62	62853
63	136000

[1, 1, 2, 1, 3, 1, 1, 4, 4, 4, 1, 5, 7, 15, 5, 1, 6, 12, 35, 40, 14, 1, 7, 17, 72, 145, 146, 21, 1, 8, 24, 128, 400, 770, 514, 51, 1, 9, 31, 205, 883, 2698, 4029, 2032, 102, 1, 10, 40, 311, 1724, 7358, 18646, 22739, 8076, 249, 1, 11, 49, 448, 3045, 16968, 62853, 136000]

cp's OEIS Frontend

A209344 T(n,k) is the number of n-bead necklaces labeled with numbers -k..k allowing reversal, with sum zero with no three beads in a row equal.

Table of values

List of values