A209727 - cp's OEIS frontend

A209727 T(n,k) = 1/4 the number of (n+1) X (k+1) 0..2 arrays with every 2 X 2 subblock having distinct clockwise edge differences.

n	a(n)
1	2
2	3
3	3
4	4
5	4
6	4
7	6
8	5
9	5
10	6
11	8
12	7
13	6
14	7
15	8
16	12
17	9
18	8
19	8
20	9
21	12
22	16
23	13
24	10
25	10
26	10
27	13
28	16
29	24
30	17
31	14
32	12
33	12
34	14
35	17
36	24
37	32
38	25
39	18
40	16
41	14
42	16
43	18
44	25
45	32
46	48
47	33
48	26
49	20
50	18
51	18
52	20
53	26
54	33
55	48
56	64
57	49
58	34
59	28
60	22
61	22
62	22
63	28
64	34
65	49
66	64
67	96
68	65
69	50
70	36
71	30
72	26
73	26
74	30
75	36
76	50
77	65
78	96

[2, 3, 3, 4, 4, 4, 6, 5, 5, 6, 8, 7, 6, 7, 8, 12, 9, 8, 8, 9, 12, 16, 13, 10, 10, 10, 13, 16, 24, 17, 14, 12, 12, 14, 17, 24, 32, 25, 18, 16, 14, 16, 18, 25, 32, 48, 33, 26, 20, 18, 18, 20, 26, 33, 48, 64, 49, 34, 28, 22, 22, 22, 28, 34, 49, 64, 96, 65, 50, 36, 30, 26, 26, 30, 36, 50, 65, 96]

cp's OEIS Frontend

A209727 T(n,k) = 1/4 the number of (n+1) X (k+1) 0..2 arrays with every 2 X 2 subblock having distinct clockwise edge differences.

Table of values

List of values

n	a(n)
1	2
2	3
3	3
4	4
5	4
6	4
7	6
8	5
9	5
10	6
11	8
12	7
13	6
14	7
15	8
16	12
17	9
18	8
19	8
20	9
21	12
22	16
23	13
24	10
25	10
26	10
27	13
28	16
29	24
30	17
31	14
32	12
33	12
34	14
35	17
36	24
37	32
38	25
39	18
40	16
41	14
42	16
43	18
44	25
45	32
46	48
47	33
48	26
49	20
50	18
51	18
52	20
53	26
54	33
55	48
56	64
57	49
58	34
59	28
60	22
61	22
62	22
63	28
64	34
65	49
66	64
67	96
68	65
69	50
70	36
71	30
72	26
73	26
74	30
75	36
76	50
77	65
78	96

n	a(n)
1	2
2	3
3	3
4	4
5	4
6	4
7	6
8	5
9	5
10	6
11	8
12	7
13	6
14	7
15	8
16	12
17	9
18	8
19	8
20	9
21	12
22	16
23	13
24	10
25	10
26	10
27	13
28	16
29	24
30	17
31	14
32	12
33	12
34	14
35	17
36	24
37	32
38	25
39	18
40	16
41	14
42	16
43	18
44	25
45	32
46	48
47	33
48	26
49	20
50	18
51	18
52	20
53	26
54	33
55	48
56	64
57	49
58	34
59	28
60	22
61	22
62	22
63	28
64	34
65	49
66	64
67	96
68	65
69	50
70	36
71	30
72	26
73	26
74	30
75	36
76	50
77	65
78	96

n	a(n)
1	2
2	3
3	3
4	4
5	4
6	4
7	6
8	5
9	5
10	6
11	8
12	7
13	6
14	7
15	8
16	12
17	9
18	8
19	8
20	9
21	12
22	16
23	13
24	10
25	10
26	10
27	13
28	16
29	24
30	17
31	14
32	12
33	12
34	14
35	17
36	24
37	32
38	25
39	18
40	16
41	14
42	16
43	18
44	25
45	32
46	48
47	33
48	26
49	20
50	18
51	18
52	20
53	26
54	33
55	48
56	64
57	49
58	34
59	28
60	22
61	22
62	22
63	28
64	34
65	49
66	64
67	96
68	65
69	50
70	36
71	30
72	26
73	26
74	30
75	36
76	50
77	65
78	96