Number of nX4 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j).
A230064
Number of nX4 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j).
Terms
- a(0) =0a(1) =81a(2) =441a(3) =15129a(4) =281961a(5) =6487209a(6) =137945025a(7) =3020271849a(8) =65409597009
External references
- oeis: A230064