A181019 - cp's OEIS frontend

A181019 T(n,k) = maximum number of 1s in an n X k binary matrix with no three 1s adjacent in a line along a row, column or diagonally.

n	a(n)
1	1
2	2
3	2
4	2
5	4
6	2
7	3
8	4
9	4
10	3
11	4
12	6
13	6
14	6
15	4
16	4
17	8
18	7
19	7
20	8
21	4
22	5
23	8
24	9
25	9
26	9
27	8
28	5
29	6
30	10
31	10
32	12
33	12
34	10
35	10
36	6
37	6
38	12
39	12
40	13
41	16
42	13
43	12
44	12
45	6
46	7
47	12
48	14
49	16
50	17
51	17
52	16
53	14
54	12
55	7
56	8
57	14
58	15
59	18
60	20
61	20
62	20
63	18
64	15
65	14
66	8
67	8
68	16
69	17
70	20
71	24
72	23
73	23
74	24
75	20
76	17
77	16
78	8
79	9
80	16
81	19
82	22
83	25
84	26

[1, 2, 2, 2, 4, 2, 3, 4, 4, 3, 4, 6, 6, 6, 4, 4, 8, 7, 7, 8, 4, 5, 8, 9, 9, 9, 8, 5, 6, 10, 10, 12, 12, 10, 10, 6, 6, 12, 12, 13, 16, 13, 12, 12, 6, 7, 12, 14, 16, 17, 17, 16, 14, 12, 7, 8, 14, 15, 18, 20, 20, 20, 18, 15, 14, 8, 8, 16, 17, 20, 24, 23, 23, 24, 20, 17, 16, 8, 9, 16, 19, 22, 25, 26]

cp's OEIS Frontend

A181019 T(n,k) = maximum number of 1s in an n X k binary matrix with no three 1s adjacent in a line along a row, column or diagonally.

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	2
5	4
6	2
7	3
8	4
9	4
10	3
11	4
12	6
13	6
14	6
15	4
16	4
17	8
18	7
19	7
20	8
21	4
22	5
23	8
24	9
25	9
26	9
27	8
28	5
29	6
30	10
31	10
32	12
33	12
34	10
35	10
36	6
37	6
38	12
39	12
40	13
41	16
42	13
43	12
44	12
45	6
46	7
47	12
48	14
49	16
50	17
51	17
52	16
53	14
54	12
55	7
56	8
57	14
58	15
59	18
60	20
61	20
62	20
63	18
64	15
65	14
66	8
67	8
68	16
69	17
70	20
71	24
72	23
73	23
74	24
75	20
76	17
77	16
78	8
79	9
80	16
81	19
82	22
83	25
84	26

n	a(n)
1	1
2	2
3	2
4	2
5	4
6	2
7	3
8	4
9	4
10	3
11	4
12	6
13	6
14	6
15	4
16	4
17	8
18	7
19	7
20	8
21	4
22	5
23	8
24	9
25	9
26	9
27	8
28	5
29	6
30	10
31	10
32	12
33	12
34	10
35	10
36	6
37	6
38	12
39	12
40	13
41	16
42	13
43	12
44	12
45	6
46	7
47	12
48	14
49	16
50	17
51	17
52	16
53	14
54	12
55	7
56	8
57	14
58	15
59	18
60	20
61	20
62	20
63	18
64	15
65	14
66	8
67	8
68	16
69	17
70	20
71	24
72	23
73	23
74	24
75	20
76	17
77	16
78	8
79	9
80	16
81	19
82	22
83	25
84	26

n	a(n)
1	1
2	2
3	2
4	2
5	4
6	2
7	3
8	4
9	4
10	3
11	4
12	6
13	6
14	6
15	4
16	4
17	8
18	7
19	7
20	8
21	4
22	5
23	8
24	9
25	9
26	9
27	8
28	5
29	6
30	10
31	10
32	12
33	12
34	10
35	10
36	6
37	6
38	12
39	12
40	13
41	16
42	13
43	12
44	12
45	6
46	7
47	12
48	14
49	16
50	17
51	17
52	16
53	14
54	12
55	7
56	8
57	14
58	15
59	18
60	20
61	20
62	20
63	18
64	15
65	14
66	8
67	8
68	16
69	17
70	20
71	24
72	23
73	23
74	24
75	20
76	17
77	16
78	8
79	9
80	16
81	19
82	22
83	25
84	26