Number of 4Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, diagonally or antidiagonally.
A232152
Number of 4Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, diagonally or antidiagonally.
Terms
- a(0) =1a(1) =887a(2) =67311a(3) =3409361a(4) =191897041a(5) =11346946019a(6) =663248443295
External references
- oeis: A232152