Number of nX2 0..n*2-1 arrays with upper left zero and lower right n*2-1 and each element differing from its horizontal and vertical neighbors by a power of two.
A265174
Number of nX2 0..n*2-1 arrays with upper left zero and lower right n*2-1 and each element differing from its horizontal and vertical neighbors by a power of two.
Terms
- a(0) =1a(1) =4a(2) =21a(3) =139a(4) =8463a(5) =219995a(6) =6639203a(7) =149441692a(8) =6260685646a(9) =183876714594
External references
- oeis: A265174