Number of (n+1) X (2+1) arrays of permutations of 0..n*3+2 with each element having index change +-(.,.) 0,0 0,2 or 1,0.

A264202

Number of (n+1) X (2+1) arrays of permutations of 0..n*3+2 with each element having index change +-(.,.) 0,0 0,2 or 1,0.

Terms

    a(0) =18a(1) =96a(2) =605a(3) =3600a(4) =21853a(5) =131712a(6) =795906a(7) =4804910a(8) =29017649a(9) =175219200a(10) =1058090513a(11) =6389336434a(12) =38582627490a(13) =232984303104

External references