Number of nX3 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, vertically, diagonally or antidiagonally.
A232454
Number of nX3 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, vertically, diagonally or antidiagonally.
Terms
- a(0) =7a(1) =381a(2) =8227a(3) =187989a(4) =4423815a(5) =103104905a(6) =2403848151a(7) =56071521045
External references
- oeis: A232454