Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having index change +-(.,.) 0,0 1,2 or 2,2.

A264021

Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having index change +-(.,.) 0,0 1,2 or 2,2.

Terms

    a(0) =1a(1) =233a(2) =54289a(3) =3524125a(4) =228765625a(5) =21860843125

External references