A222509 - cp's OEIS frontend

A222509 T(n,k)=Number of nXk 0..1 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

n	a(n)
1	1
2	0
3	0
4	0
5	0
6	0
7	3
8	4
9	4
10	0
11	4
12	3
13	4
14	11
15	0
16	4
17	10
18	15
19	35
20	8
21	0
22	5
23	32
24	35
25	84
26	87
27	44
28	0
29	20
30	44
31	170
32	423
33	497
34	496
35	144
36	0
37	27
38	176
39	441
40	1753
41	2066
42	2862
43	1335
44	352
45	0
46	48
47	326
48	2192
49	8489
50	17674
51	23678
52	15420
53	7552
54	692
55	0
56	63
57	888
58	5416
59	39873
60	81537
61	195968
62	128889

[1, 0, 0, 0, 0, 0, 3, 4, 4, 0, 4, 3, 4, 11, 0, 4, 10, 15, 35, 8, 0, 5, 32, 35, 84, 87, 44, 0, 20, 44, 170, 423, 497, 496, 144, 0, 27, 176, 441, 1753, 2066, 2862, 1335, 352, 0, 48, 326, 2192, 8489, 17674, 23678, 15420, 7552, 692, 0, 63, 888, 5416, 39873, 81537, 195968, 128889]

cp's OEIS Frontend

A222509 T(n,k)=Number of nXk 0..1 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

Table of values

List of values