Number of n X 3 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally.
A232290
Number of n X 3 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally.
Terms
- a(0) =7a(1) =97a(2) =1313a(3) =17759a(4) =240241a(5) =3249889a(6) =43963319a(7) =594719777a(8) =8045152705a(9) =108831897871
External references
- oeis: A232290