A183986 - cp's OEIS frontend

A183986 T(n,k) = 1/4 the number of (n+1) X (k+1) binary arrays with all 2 X 2 subblock sums the same.

n	a(n)
1	4
2	6
3	6
4	9
5	8
6	9
7	15
8	11
9	11
10	15
11	25
12	17
13	14
14	17
15	25
16	45
17	27
18	20
19	20
20	27
21	45
22	81
23	47
24	30
25	26
26	30
27	47
28	81
29	153
30	83
31	50
32	36
33	36
34	50
35	83
36	153
37	289
38	155
39	86
40	56
41	46
42	56
43	86
44	155
45	289
46	561
47	291
48	158
49	92
50	66
51	66
52	92
53	158
54	291
55	561
56	1089
57	563
58	294
59	164
60	102
61	86
62	102
63	164
64	294
65	563

[4, 6, 6, 9, 8, 9, 15, 11, 11, 15, 25, 17, 14, 17, 25, 45, 27, 20, 20, 27, 45, 81, 47, 30, 26, 30, 47, 81, 153, 83, 50, 36, 36, 50, 83, 153, 289, 155, 86, 56, 46, 56, 86, 155, 289, 561, 291, 158, 92, 66, 66, 92, 158, 291, 561, 1089, 563, 294, 164, 102, 86, 102, 164, 294, 563]

cp's OEIS Frontend

A183986 T(n,k) = 1/4 the number of (n+1) X (k+1) binary arrays with all 2 X 2 subblock sums the same.

Table of values

List of values