A236560 - cp's OEIS frontend

A236560 Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X n square under all symmetry operations of the square; irregular triangle T(n,k), n>=3, 0<=k<=floor(n/3)^2, read by rows.

n	a(n)
3	1
4	1
5	1
6	1
7	1
8	3
9	1
10	3
11	6
12	2
13	1
14	1
15	6
16	21
17	29
18	14
19	1
20	6
21	53
22	161
23	174
24	1
25	10
26	111
27	665
28	1713
29	1549
30	608
31	107
32	11
33	1
34	1
35	10
36	201
37	1961
38	9973
39	24267
40	29437
41	17438
42	4756
43	459

[1, 1, 1, 1, 1, 3, 1, 3, 6, 2, 1, 1, 6, 21, 29, 14, 1, 6, 53, 161, 174, 1, 10, 111, 665, 1713, 1549, 608, 107, 11, 1, 1, 10, 201, 1961, 9973, 24267, 29437, 17438, 4756, 459]

cp's OEIS Frontend

A236560 Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X n square under all symmetry operations of the square; irregular triangle T(n,k), n>=3, 0<=k<=floor(n/3)^2, read by rows.

Table of values

List of values