Number of 4Xn 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 in row major order.
A233101
Number of 4Xn 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 in row major order.
Terms
- a(0) =36a(1) =515a(2) =13721a(3) =342626a(4) =8714705a(5) =221113913a(6) =5614356176a(7) =142541243171
External references
- oeis: A233101