A067925 - cp's OEIS frontend

A067925 Consider a room of size r X s where rs = 2n and 1 <= r, 1 <= 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 distinguished if one is a rotation or reflection of the other.

n	a(n)
1	2
2	4
3	8
4	10
5	14
6	28
7	28
8	42
9	70
10	90
11	122
12	204
13	260
14	386
15	592
16	824
17	1192
18	1810
19	2558
20	3764
21	5580
22	8064
23	11794
24	17438
25	25338
26	37144
27	54626
28	79762
29	116852
30	171650
31	250984
32	367874
33	539668
34	790110
35	1157912
36	1697978
37	2487050
38	3645012
39	5343444

[2, 4, 8, 10, 14, 28, 28, 42, 70, 90, 122, 204, 260, 386, 592, 824, 1192, 1810, 2558, 3764, 5580, 8064, 11794, 17438, 25338, 37144, 54626, 79762, 116852, 171650, 250984, 367874, 539668, 790110, 1157912, 1697978, 2487050, 3645012, 5343444]

cp's OEIS Frontend

A067925 Consider a room of size r X s where rs = 2n and 1 <= r, 1 <= 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 distinguished if one is a rotation or reflection of the other.

Table of values

List of values