A052270 - cp's OEIS frontend

A052270 Consider a room of size r X s where rs = 2n and 1 <= r <= s; count ways to arrange n Tatami mats in room; a(n) = total number of ways for all choices of r and s. Two arrangements are considered the same if one is a rotation or reflection of the other.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	9
7	9
8	14
9	19
10	27
11	34
12	56
13	70
14	105
15	152
16	218
17	308
18	466
19	654
20	966
21	1407
22	2052
23	2979
24	4399
25	6378
26	9361
27	13697
28	20051
29	29308
30	43035
31	62885
32	92204
33	135053
34	197871
35	289775
36	424891
37	622199
38	911988
39	1336319
40	1958344
41	2869418
42	4205888

[1, 2, 3, 4, 5, 9, 9, 14, 19, 27, 34, 56, 70, 105, 152, 218, 308, 466, 654, 966, 1407, 2052, 2979, 4399, 6378, 9361, 13697, 20051, 29308, 43035, 62885, 92204, 135053, 197871, 289775, 424891, 622199, 911988, 1336319, 1958344, 2869418, 4205888]

cp's OEIS Frontend

A052270 Consider a room of size r X s where rs = 2n and 1 <= r <= s; count ways to arrange n Tatami mats in room; a(n) = total number of ways for all choices of r and s. Two arrangements are considered the same if one is a rotation or reflection of the other.

Table of values

List of values