Number of 3Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally.
A232297
Number of 3Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally.
Terms
- a(0) =1a(1) =73a(2) =1313a(3) =20563a(4) =336079a(5) =5546705a(6) =91293443a(7) =1501960031a(8) =24713799985a(9) =406656992827
External references
- oeis: A232297