A221408 - cp's OEIS frontend

A221408 T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor, with every occupancy equal to zero or two.

n	a(n)
1	0
2	2
3	2
4	0
5	6
6	0
7	4
8	16
9	16
10	4
11	0
12	44
13	0
14	44
15	0
16	8
17	120
18	436
19	436
20	120
21	8
22	0
23	328
24	0
25	4518
26	0
27	328
28	0
29	16
30	896
31	12668
32	47156
33	47156
34	12668
35	896
36	16
37	0
38	2448
39	0
40	492102
41	0
42	492102
43	0
44	2448
45	0
46	32
47	6688
48	368268
49	5133044
50	18852560
51	18852560
52	5133044
53	368268
54	6688
55	32

[0, 2, 2, 0, 6, 0, 4, 16, 16, 4, 0, 44, 0, 44, 0, 8, 120, 436, 436, 120, 8, 0, 328, 0, 4518, 0, 328, 0, 16, 896, 12668, 47156, 47156, 12668, 896, 16, 0, 2448, 0, 492102, 0, 492102, 0, 2448, 0, 32, 6688, 368268, 5133044, 18852560, 18852560, 5133044, 368268, 6688, 32]

cp's OEIS Frontend

A221408 T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor, with every occupancy equal to zero or two.

Table of values

List of values