A212221 - cp's OEIS frontend

A212221 Square array A(n,k), n>=1, k>=1, read by antidiagonals: A(n,k) is 1/(2*n) times the number of n-colorings of the complete tripartite graph K_(k,k,k).

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	1
10	3
11	0
12	0
13	1
14	12
15	6
16	0
17	0
18	1
19	30
20	78
21	10
22	0
23	0
24	1
25	66
26	474
27	340
28	15
29	0
30	0
31	1
32	138
33	2238
34	4780
35	1095
36	21
37	0
38	0
39	1
40	282
41	9546
42	46420
43	32955
44	2856
45	28
46	0
47	0
48	1
49	570
50	38958
51	385660
52	617775
53	168546
54	6412
55	36

[0, 0, 0, 0, 0, 1, 0, 0, 1, 3, 0, 0, 1, 12, 6, 0, 0, 1, 30, 78, 10, 0, 0, 1, 66, 474, 340, 15, 0, 0, 1, 138, 2238, 4780, 1095, 21, 0, 0, 1, 282, 9546, 46420, 32955, 2856, 28, 0, 0, 1, 570, 38958, 385660, 617775, 168546, 6412, 36]

cp's OEIS Frontend

A212221 Square array A(n,k), n>=1, k>=1, read by antidiagonals: A(n,k) is 1/(2*n) times the number of n-colorings of the complete tripartite graph K_(k,k,k).

Table of values

List of values