A254040 - cp's OEIS frontend

A254040 Number T(n,k) of primitive (= aperiodic) n-bead necklaces with colored beads of exactly k different colors; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.

n	a(n)
0	1
1	0
2	1
3	0
4	0
5	1
6	0
7	0
8	2
9	2
10	0
11	0
12	3
13	9
14	6
15	0
16	0
17	6
18	30
19	48
20	24
21	0
22	0
23	9
24	89
25	260
26	300
27	120
28	0
29	0
30	18
31	258
32	1200
33	2400
34	2160
35	720
36	0
37	0
38	30
39	720
40	5100
41	15750
42	23940
43	17640
44	5040
45	0
46	0
47	56
48	2016
49	20720
50	92680
51	211680
52	258720
53	161280
54	40320

[1, 0, 1, 0, 0, 1, 0, 0, 2, 2, 0, 0, 3, 9, 6, 0, 0, 6, 30, 48, 24, 0, 0, 9, 89, 260, 300, 120, 0, 0, 18, 258, 1200, 2400, 2160, 720, 0, 0, 30, 720, 5100, 15750, 23940, 17640, 5040, 0, 0, 56, 2016, 20720, 92680, 211680, 258720, 161280, 40320]

cp's OEIS Frontend

A254040 Number T(n,k) of primitive (= aperiodic) n-bead necklaces with colored beads of exactly k different colors; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.

Table of values

List of values