A182107 - cp's OEIS frontend

A182107 Number of monomer-dimer tatami tilings (no four tiles meet) of the n X n grid with n monomers and equal numbers of vertical and horizontal dimers, up to rotational symmetry.

n	a(n)
2	0
3	0
4	2
5	2
6	0
7	0
8	10
9	20
10	0
11	0
12	114
13	210
14	0
15	0
16	1322
17	2460
18	0
19	0
20	16428
21	31122
22	0
23	0
24	214660
25	410378
26	0
27	0
28	2897424
29	5575682
30	0
31	0
32	40046134
33	77445152
34	0
35	0
36	563527294
37	1093987598
38	0
39	0
40	8042361426
41	15660579168
42	0
43	0
44	116083167058
45	226608224226
46	0
47	0
48	1691193906828
49	3308255447206
50	0
51	0
52	24830916046462
53	48658330768786
54	0
55	0
56	366990100477712
57	720224064591558
58	0
59	0
60	5454733737618820

[0, 0, 2, 2, 0, 0, 10, 20, 0, 0, 114, 210, 0, 0, 1322, 2460, 0, 0, 16428, 31122, 0, 0, 214660, 410378, 0, 0, 2897424, 5575682, 0, 0, 40046134, 77445152, 0, 0, 563527294, 1093987598, 0, 0, 8042361426, 15660579168, 0, 0, 116083167058, 226608224226, 0, 0, 1691193906828, 3308255447206, 0, 0, 24830916046462, 48658330768786, 0, 0, 366990100477712, 720224064591558, 0, 0, 5454733737618820]

cp's OEIS Frontend

A182107 Number of monomer-dimer tatami tilings (no four tiles meet) of the n X n grid with n monomers and equal numbers of vertical and horizontal dimers, up to rotational symmetry.

Table of values

List of values