A257523 - cp's OEIS frontend

A257523 Number T(n,k) of equivalence classes of ways of placing k 4 X 4 tiles in an n X 7 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	2
6	1
7	2
8	1
9	4
10	1
11	4
12	1
13	6
14	6
15	1
16	6
17	14
18	1
19	8
20	28
21	1
22	8
23	44
24	1
25	10
26	66
27	20
28	1
29	10
30	90
31	64
32	1
33	12
34	120
35	168
36	1
37	12
38	152
39	320
40	1
41	14
42	190
43	572
44	72
45	1
46	14
47	230
48	896
49	328
50	1
51	16
52	276
53	1360
54	984
55	1
56	16
57	324
58	1920
59	2264
60	1
61	18
62	378
63	2660
64	4528
65	272

[1, 2, 1, 2, 1, 4, 1, 4, 1, 6, 6, 1, 6, 14, 1, 8, 28, 1, 8, 44, 1, 10, 66, 20, 1, 10, 90, 64, 1, 12, 120, 168, 1, 12, 152, 320, 1, 14, 190, 572, 72, 1, 14, 230, 896, 328, 1, 16, 276, 1360, 984, 1, 16, 324, 1920, 2264, 1, 18, 378, 2660, 4528, 272]

cp's OEIS Frontend

A257523 Number T(n,k) of equivalence classes of ways of placing k 4 X 4 tiles in an n X 7 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