A238551 - cp's OEIS frontend

A238551 Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X 6 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=3, 0<=k<=2*floor(n/3), read by rows.

n	a(n)
3	1
4	2
5	1
6	1
7	2
8	2
9	1
10	4
11	4
12	1
13	4
14	11
15	3
16	1
17	1
18	6
19	21
20	13
21	4
22	1
23	6
24	36
25	32
26	13
27	1
28	8
29	54
30	82
31	49
32	8
33	1
34	1
35	8
36	77
37	165
38	151
39	44
40	6
41	1
42	10
43	103
44	319
45	382
46	173
47	31
48	1
49	10
50	134
51	530
52	867
53	559
54	164
55	12
56	1
57	1
58	12
59	168
60	852
61	1789
62	1632
63	705
64	119
65	9

[1, 2, 1, 1, 2, 2, 1, 4, 4, 1, 4, 11, 3, 1, 1, 6, 21, 13, 4, 1, 6, 36, 32, 13, 1, 8, 54, 82, 49, 8, 1, 1, 8, 77, 165, 151, 44, 6, 1, 10, 103, 319, 382, 173, 31, 1, 10, 134, 530, 867, 559, 164, 12, 1, 1, 12, 168, 852, 1789, 1632, 705, 119, 9]

cp's OEIS Frontend

A238551 Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X 6 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=3, 0<=k<=2*floor(n/3), read by rows.

Table of values

List of values