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

A263820

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

Terms

    a(0) =450a(1) =134028a(2) =21876416a(3) =3019386508a(4) =469723808009

External references