Number of 3Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, diagonally or antidiagonally.
A232151
Number of 3Xn 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) =145a(2) =3669a(3) =67725a(4) =1345057a(5) =27888353a(6) =572956549a(7) =11720173753a(8) =239945876241
External references
- oeis: A232151