Number of n X 5 0..3 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4 and at least one element with value (x(i,j)-1) mod 4, and upper left element zero.

A231078

Number of n X 5 0..3 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4 and at least one element with value (x(i,j)-1) mod 4, and upper left element zero.

Terms

    a(0) =0a(1) =356a(2) =2820a(3) =523936a(4) =18655220a(5) =1480839364a(6) =79624748768

External references