A181253 - cp's OEIS frontend

A181253 T(n,k)=Number of nXk binary matrices with no 2X2 block having four 1's.

n	a(n)
1	2
2	4
3	4
4	8
5	15
6	8
7	16
8	57
9	57
10	16
11	32
12	216
13	417
14	216
15	32
16	64
17	819
18	3032
19	3032
20	819
21	64
22	128
23	3105
24	22077
25	42176
26	22077
27	3105
28	128
29	256
30	11772
31	160697
32	587920
33	587920
34	160697
35	11772
36	256
37	512
38	44631
39	1169792
40	8191392
41	15701273
42	8191392
43	1169792
44	44631
45	512

[2, 4, 4, 8, 15, 8, 16, 57, 57, 16, 32, 216, 417, 216, 32, 64, 819, 3032, 3032, 819, 64, 128, 3105, 22077, 42176, 22077, 3105, 128, 256, 11772, 160697, 587920, 587920, 160697, 11772, 256, 512, 44631, 1169792, 8191392, 15701273, 8191392, 1169792, 44631, 512]

cp's OEIS Frontend

A181253 T(n,k)=Number of nXk binary matrices with no 2X2 block having four 1's.

Table of values

List of values