Number of n X 3 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.
A233093
Number of n X 3 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) =5a(1) =65a(2) =941a(3) =13721a(4) =200165a(5) =2920145a(6) =42601181a(7) =621496841a(8) =9066845525a(9) =132273701825
External references
- oeis: A233093