A106512 - cp's OEIS frontend

A106512 Array read by antidiagonals: a(n,k) = number of k-colorings of a circle of n nodes (n >= 1, k >= 1).

n	a(n)
1	0
2	0
3	0
4	0
5	2
6	0
7	0
8	6
9	0
10	0
11	0
12	12
13	6
14	2
15	0
16	0
17	20
18	24
19	18
20	0
21	0
22	0
23	30
24	60
25	84
26	30
27	2
28	0
29	0
30	42
31	120
32	260
33	240
34	66
35	0
36	0
37	0
38	56
39	210
40	630
41	1020
42	732
43	126
44	2
45	0
46	0
47	72
48	336
49	1302
50	3120
51	4100
52	2184
53	258
54	0
55	0
56	0
57	90
58	504
59	2408
60	7770
61	15630
62	16380
63	6564
64	510
65	2
66	0
67	0
68	110

[0, 0, 0, 0, 2, 0, 0, 6, 0, 0, 0, 12, 6, 2, 0, 0, 20, 24, 18, 0, 0, 0, 30, 60, 84, 30, 2, 0, 0, 42, 120, 260, 240, 66, 0, 0, 0, 56, 210, 630, 1020, 732, 126, 2, 0, 0, 72, 336, 1302, 3120, 4100, 2184, 258, 0, 0, 0, 90, 504, 2408, 7770, 15630, 16380, 6564, 510, 2, 0, 0, 110]

cp's OEIS Frontend

A106512 Array read by antidiagonals: a(n,k) = number of k-colorings of a circle of n nodes (n >= 1, k >= 1).

Table of values

List of values