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

A263818

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

Terms

    a(0) =32a(1) =948a(2) =18776a(3) =333429a(4) =6425985a(5) =124854432a(6) =2392853088a(7) =45898515536a(8) =882504683737

External references