Number of ways to arrange n women and n men around a circular table so that they can be divided into n nonintersecting pairs of 1 woman and 1 man sitting side-by-side.
A273935
Number of ways to arrange n women and n men around a circular table so that they can be divided into n nonintersecting pairs of 1 woman and 1 man sitting side-by-side.
Terms
- a(0) =1a(1) =1a(2) =6a(3) =84a(4) =2160a(5) =89280a(6) =5443200a(7) =460857600a(8) =51819264000
External references
- oeis: A273935