Number of nX5 0..2 arrays with exactly floor(nX5/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.
A222888
Number of nX5 0..2 arrays with exactly floor(nX5/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =16a(1) =1222a(2) =138026a(3) =24893100a(4) =2737507523a(5) =518031070610
External references
- oeis: A222888