A227436 - cp's OEIS frontend

A227436 Triangle T(n, k) of the number of n X n binary matrices with k = 0..n^2 1's and no more than three 1's in the corners of any square sub-block.

n	a(n)
1	1
2	1
3	1
4	4
5	6
6	4
7	0
8	1
9	9
10	36
11	84
12	121
13	101
14	38
15	4
16	0
17	0
18	1
19	16
20	120
21	560
22	1806
23	4200
24	7096
25	8532
26	6929
27	3444
28	876
29	84
30	2
31	0
32	0
33	0
34	0
35	1
36	25
37	300
38	2300
39	12620
40	52500
41	170830
42	441554
43	910568
44	1490996
45	1912700
46	1879432
47	1368707

[1, 1, 1, 4, 6, 4, 0, 1, 9, 36, 84, 121, 101, 38, 4, 0, 0, 1, 16, 120, 560, 1806, 4200, 7096, 8532, 6929, 3444, 876, 84, 2, 0, 0, 0, 0, 1, 25, 300, 2300, 12620, 52500, 170830, 441554, 910568, 1490996, 1912700, 1879432, 1368707]

cp's OEIS Frontend

A227436 Triangle T(n, k) of the number of n X n binary matrices with k = 0..n^2 1's and no more than three 1's in the corners of any square sub-block.

Table of values

List of values