A267060 - cp's OEIS frontend

A267060 a(n) = number of different ways to seat a set of n married male-female couples at a round table so that men and women alternate and every man is separated by at least d = 2 men from his wife.

n	a(n)
1	0
2	0
3	0
4	0
5	24
6	240
7	22320
8	1330560
9	112210560
10	11183235840
11	1340192044800
12	189443216793600
13	31267307962598400
14	5964702729085900800
15	1303453560329957836800
16	323680816052170536960000
17	90679832709074132299776000
18	28473630606612014817337344000

[0, 0, 0, 0, 24, 240, 22320, 1330560, 112210560, 11183235840, 1340192044800, 189443216793600, 31267307962598400, 5964702729085900800, 1303453560329957836800, 323680816052170536960000, 90679832709074132299776000, 28473630606612014817337344000]

cp's OEIS Frontend

A267060 a(n) = number of different ways to seat a set of n married male-female couples at a round table so that men and women alternate and every man is separated by at least d = 2 men from his wife.

Table of values

List of values