A227004 - cp's OEIS frontend

A227004 Irregular triangle read by rows: T(n,k) is the number of inequivalent tilings by squares of an n X n square lattice that contain k nodes unconnected to any of their neighbors.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	0
7	0
8	1
9	1
10	3
11	4
12	2
13	2
14	0
15	0
16	0
17	0
18	1
19	1
20	3
21	13
22	20
23	17
24	6
25	10
26	5
27	0
28	1
29	0
30	0
31	0
32	0
33	0
34	0
35	1
36	1
37	6
38	37
39	138
40	280
41	300
42	255
43	218
44	98
45	43
46	55
47	28
48	20
49	11
50	1
51	0
52	2
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	1

[1, 1, 1, 1, 1, 0, 0, 1, 1, 3, 4, 2, 2, 0, 0, 0, 0, 1, 1, 3, 13, 20, 17, 6, 10, 5, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 6, 37, 138, 280, 300, 255, 218, 98, 43, 55, 28, 20, 11, 1, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 1]

cp's OEIS Frontend

A227004 Irregular triangle read by rows: T(n,k) is the number of inequivalent tilings by squares of an n X n square lattice that contain k nodes unconnected to any of their neighbors.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	0
7	0
8	1
9	1
10	3
11	4
12	2
13	2
14	0
15	0
16	0
17	0
18	1
19	1
20	3
21	13
22	20
23	17
24	6
25	10
26	5
27	0
28	1
29	0
30	0
31	0
32	0
33	0
34	0
35	1
36	1
37	6
38	37
39	138
40	280
41	300
42	255
43	218
44	98
45	43
46	55
47	28
48	20
49	11
50	1
51	0
52	2
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	1

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	0
7	0
8	1
9	1
10	3
11	4
12	2
13	2
14	0
15	0
16	0
17	0
18	1
19	1
20	3
21	13
22	20
23	17
24	6
25	10
26	5
27	0
28	1
29	0
30	0
31	0
32	0
33	0
34	0
35	1
36	1
37	6
38	37
39	138
40	280
41	300
42	255
43	218
44	98
45	43
46	55
47	28
48	20
49	11
50	1
51	0
52	2
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	1

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	0
7	0
8	1
9	1
10	3
11	4
12	2
13	2
14	0
15	0
16	0
17	0
18	1
19	1
20	3
21	13
22	20
23	17
24	6
25	10
26	5
27	0
28	1
29	0
30	0
31	0
32	0
33	0
34	0
35	1
36	1
37	6
38	37
39	138
40	280
41	300
42	255
43	218
44	98
45	43
46	55
47	28
48	20
49	11
50	1
51	0
52	2
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	1