Number of permutations of an nX6 array with each element moving exactly one horizontally or vertically and without 2-loops.

A216798

Number of permutations of an nX6 array with each element moving exactly one horizontally or vertically and without 2-loops.

Terms

    a(0) =0a(1) =22a(2) =32a(3) =1774a(4) =10140a(5) =207408a(6) =1879040a(7) =27918806a(8) =302667484a(9) =3991662992a(10) =46492284664a(11) =585384941184

External references