A231568 - cp's OEIS frontend

A231568 Number T(n,k) of equivalence classes of ways of placing k 4 X 4 tiles in an n X 5 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=4, 0<=k<=floor(n/4), read by rows.

n	a(n)
4	1
5	1
6	1
7	1
8	1
9	2
10	1
11	2
12	1
13	3
14	2
15	1
16	3
17	4
18	1
19	4
20	8
21	1
22	4
23	12
24	1
25	5
26	18
27	3
28	1
29	5
30	24
31	8
32	1
33	6
34	32
35	22
36	1
37	6
38	40
39	40
40	1
41	7
42	50
43	73
44	6
45	1
46	7
47	60
48	112
49	22
50	1
51	8
52	72
53	172
54	66
55	1
56	8
57	84
58	240
59	146
60	1
61	9
62	98
63	335
64	292
65	10
66	1
67	9
68	112
69	440
70	516
71	48
72	1
73	10
74	128
75	578
76	860
77	174

[1, 1, 1, 1, 1, 2, 1, 2, 1, 3, 2, 1, 3, 4, 1, 4, 8, 1, 4, 12, 1, 5, 18, 3, 1, 5, 24, 8, 1, 6, 32, 22, 1, 6, 40, 40, 1, 7, 50, 73, 6, 1, 7, 60, 112, 22, 1, 8, 72, 172, 66, 1, 8, 84, 240, 146, 1, 9, 98, 335, 292, 10, 1, 9, 112, 440, 516, 48, 1, 10, 128, 578, 860, 174]

cp's OEIS Frontend

A231568 Number T(n,k) of equivalence classes of ways of placing k 4 X 4 tiles in an n X 5 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=4, 0<=k<=floor(n/4), read by rows.

Table of values

List of values

n	a(n)
4	1
5	1
6	1
7	1
8	1
9	2
10	1
11	2
12	1
13	3
14	2
15	1
16	3
17	4
18	1
19	4
20	8
21	1
22	4
23	12
24	1
25	5
26	18
27	3
28	1
29	5
30	24
31	8
32	1
33	6
34	32
35	22
36	1
37	6
38	40
39	40
40	1
41	7
42	50
43	73
44	6
45	1
46	7
47	60
48	112
49	22
50	1
51	8
52	72
53	172
54	66
55	1
56	8
57	84
58	240
59	146
60	1
61	9
62	98
63	335
64	292
65	10
66	1
67	9
68	112
69	440
70	516
71	48
72	1
73	10
74	128
75	578
76	860
77	174

n	a(n)
4	1
5	1
6	1
7	1
8	1
9	2
10	1
11	2
12	1
13	3
14	2
15	1
16	3
17	4
18	1
19	4
20	8
21	1
22	4
23	12
24	1
25	5
26	18
27	3
28	1
29	5
30	24
31	8
32	1
33	6
34	32
35	22
36	1
37	6
38	40
39	40
40	1
41	7
42	50
43	73
44	6
45	1
46	7
47	60
48	112
49	22
50	1
51	8
52	72
53	172
54	66
55	1
56	8
57	84
58	240
59	146
60	1
61	9
62	98
63	335
64	292
65	10
66	1
67	9
68	112
69	440
70	516
71	48
72	1
73	10
74	128
75	578
76	860
77	174

n	a(n)
4	1
5	1
6	1
7	1
8	1
9	2
10	1
11	2
12	1
13	3
14	2
15	1
16	3
17	4
18	1
19	4
20	8
21	1
22	4
23	12
24	1
25	5
26	18
27	3
28	1
29	5
30	24
31	8
32	1
33	6
34	32
35	22
36	1
37	6
38	40
39	40
40	1
41	7
42	50
43	73
44	6
45	1
46	7
47	60
48	112
49	22
50	1
51	8
52	72
53	172
54	66
55	1
56	8
57	84
58	240
59	146
60	1
61	9
62	98
63	335
64	292
65	10
66	1
67	9
68	112
69	440
70	516
71	48
72	1
73	10
74	128
75	578
76	860
77	174