A236679 - cp's OEIS frontend

A236679 Number T(n,k) of equivalence classes of ways of placing k 2 X 2 tiles in an n X n square under all symmetry operations of the square; irregular triangle T(n,k), n>=2, 0<=k<=floor(n/2)^2, read by rows.

n	a(n)
2	1
3	1
4	1
5	1
6	1
7	3
8	4
9	2
10	1
11	1
12	3
13	13
14	20
15	14
16	1
17	6
18	37
19	138
20	277
21	273
22	143
23	39
24	7
25	1
26	1
27	6
28	75
29	505
30	2154
31	5335
32	7855
33	6472
34	2756
35	459
36	1
37	10
38	147
39	1547
40	10855
41	50021
42	153311
43	311552
44	416825
45	361426
46	200996
47	71654
48	16419
49	2363
50	211
51	11
52	1
53	1
54	10
55	246
56	3759
57	39926
58	291171

[1, 1, 1, 1, 1, 3, 4, 2, 1, 1, 3, 13, 20, 14, 1, 6, 37, 138, 277, 273, 143, 39, 7, 1, 1, 6, 75, 505, 2154, 5335, 7855, 6472, 2756, 459, 1, 10, 147, 1547, 10855, 50021, 153311, 311552, 416825, 361426, 200996, 71654, 16419, 2363, 211, 11, 1, 1, 10, 246, 3759, 39926, 291171]

cp's OEIS Frontend

A236679 Number T(n,k) of equivalence classes of ways of placing k 2 X 2 tiles in an n X n square under all symmetry operations of the square; irregular triangle T(n,k), n>=2, 0<=k<=floor(n/2)^2, read by rows.

Table of values

List of values