Number of 4Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).
A230187
Number of 4Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).
Terms
- a(0) =0a(1) =129a(2) =1971a(3) =73857a(4) =2432241a(5) =82359177a(6) =2770525761a(7) =93340154655
External references
- oeis: A230187