Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 0,2 or 2,1.

A264198

Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 0,2 or 2,1.

Terms

    a(0) =8a(1) =360a(2) =19845a(3) =395280a(4) =10764800a(5) =324210304a(6) =9863496016a(7) =279809075700

External references