A280440 - cp's OEIS frontend

A280440 T(n,k)=Number of nXk 0..1 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

n	a(n)
1	0
2	0
3	0
4	1
5	4
6	1
7	2
8	10
9	10
10	2
11	5
12	20
13	21
14	20
15	5
16	10
17	38
18	42
19	42
20	38
21	10
22	20
23	68
24	77
25	80
26	77
27	68
28	20
29	38
30	120
31	136
32	138
33	138
34	136
35	120
36	38
37	71
38	208
39	236
40	232
41	225
42	232
43	236
44	208
45	71
46	130
47	358
48	404
49	386
50	360
51	360
52	386
53	404
54	358
55	130
56	235
57	612
58	687
59	640
60	574
61	548
62	574
63	640
64	687

[0, 0, 0, 1, 4, 1, 2, 10, 10, 2, 5, 20, 21, 20, 5, 10, 38, 42, 42, 38, 10, 20, 68, 77, 80, 77, 68, 20, 38, 120, 136, 138, 138, 136, 120, 38, 71, 208, 236, 232, 225, 232, 236, 208, 71, 130, 358, 404, 386, 360, 360, 386, 404, 358, 130, 235, 612, 687, 640, 574, 548, 574, 640, 687]

cp's OEIS Frontend

A280440 T(n,k)=Number of nXk 0..1 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	1
5	4
6	1
7	2
8	10
9	10
10	2
11	5
12	20
13	21
14	20
15	5
16	10
17	38
18	42
19	42
20	38
21	10
22	20
23	68
24	77
25	80
26	77
27	68
28	20
29	38
30	120
31	136
32	138
33	138
34	136
35	120
36	38
37	71
38	208
39	236
40	232
41	225
42	232
43	236
44	208
45	71
46	130
47	358
48	404
49	386
50	360
51	360
52	386
53	404
54	358
55	130
56	235
57	612
58	687
59	640
60	574
61	548
62	574
63	640
64	687

n	a(n)
1	0
2	0
3	0
4	1
5	4
6	1
7	2
8	10
9	10
10	2
11	5
12	20
13	21
14	20
15	5
16	10
17	38
18	42
19	42
20	38
21	10
22	20
23	68
24	77
25	80
26	77
27	68
28	20
29	38
30	120
31	136
32	138
33	138
34	136
35	120
36	38
37	71
38	208
39	236
40	232
41	225
42	232
43	236
44	208
45	71
46	130
47	358
48	404
49	386
50	360
51	360
52	386
53	404
54	358
55	130
56	235
57	612
58	687
59	640
60	574
61	548
62	574
63	640
64	687

n	a(n)
1	0
2	0
3	0
4	1
5	4
6	1
7	2
8	10
9	10
10	2
11	5
12	20
13	21
14	20
15	5
16	10
17	38
18	42
19	42
20	38
21	10
22	20
23	68
24	77
25	80
26	77
27	68
28	20
29	38
30	120
31	136
32	138
33	138
34	136
35	120
36	38
37	71
38	208
39	236
40	232
41	225
42	232
43	236
44	208
45	71
46	130
47	358
48	404
49	386
50	360
51	360
52	386
53	404
54	358
55	130
56	235
57	612
58	687
59	640
60	574
61	548
62	574
63	640
64	687