Number of ways to move elements of an nXnXn triangular array to themselves or a neighbor, with no more than 1-1 elements moved to themselves.

A271677

Number of ways to move elements of an nXnXn triangular array to themselves or a neighbor, with no more than 1-1 elements moved to themselves.

Terms

    a(0) =0a(1) =2a(2) =4a(3) =132a(4) =3440a(5) =358792a(6) =71771952a(7) =39547904272

External references