A221728 - cp's OEIS frontend

A221728 T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, with every occupancy equal to zero or two.

n	a(n)
1	0
2	2
3	0
4	0
5	6
6	0
7	4
8	16
9	16
10	0
11	0
12	52
13	0
14	44
15	0
16	8
17	174
18	540
19	464
20	120
21	0
22	0
23	588
24	0
25	6188
26	0
27	328
28	0
29	16
30	1984
31	22180
32	80160
33	71310
34	13948
35	896
36	0
37	0
38	6688
39	0
40	1048566
41	0
42	824144
43	0
44	2448
45	0
46	32
47	22536
48	911081
49	13757056
50	47798542
51	42509454
52	9525048
53	420736
54	6688
55	0

[0, 2, 0, 0, 6, 0, 4, 16, 16, 0, 0, 52, 0, 44, 0, 8, 174, 540, 464, 120, 0, 0, 588, 0, 6188, 0, 328, 0, 16, 1984, 22180, 80160, 71310, 13948, 896, 0, 0, 6688, 0, 1048566, 0, 824144, 0, 2448, 0, 32, 22536, 911081, 13757056, 47798542, 42509454, 9525048, 420736, 6688, 0]

cp's OEIS Frontend

A221728 T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, with every occupancy equal to zero or two.

Table of values

List of values