Number of (n+1)X(1+1) 0..3 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
A237915
Number of (n+1)X(1+1) 0..3 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
Terms
- a(0) =256a(1) =1584a(2) =9892a(3) =63476a(4) =406468a(5) =2591160a(6) =16574240a(7) =105734776a(8) =676470380a(9) =4314907116a(10) =27605297244a(11) =176086915376
External references
- oeis: A237915