A238558 - cp's OEIS frontend

A238558 Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X 8 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	3
5	4
6	1
7	3
8	8
9	1
10	6
11	18
12	1
13	6
14	36
15	32
16	13
17	1
18	9
19	64
20	128
21	87
22	1
23	9
24	100
25	308
26	332
27	1
28	12
29	146
30	647
31	1118
32	451
33	68
34	1
35	12
36	200
37	1160
38	3022
39	2756
40	824
41	1
42	15
43	264
44	1958
45	6882
46	10076
47	5009
48	1
49	15
50	336
51	3020
52	13798
53	28774
54	24237
55	4774
56	346

[1, 3, 4, 1, 3, 8, 1, 6, 18, 1, 6, 36, 32, 13, 1, 9, 64, 128, 87, 1, 9, 100, 308, 332, 1, 12, 146, 647, 1118, 451, 68, 1, 12, 200, 1160, 3022, 2756, 824, 1, 15, 264, 1958, 6882, 10076, 5009, 1, 15, 336, 3020, 13798, 28774, 24237, 4774, 346]

cp's OEIS Frontend

A238558 Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X 8 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