1/4 the number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having distinct edge sums.
A209375
1/4 the number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having distinct edge sums.
Terms
- a(0) =4a(1) =17a(2) =64a(3) =512a(4) =2176a(5) =52784a(6) =242176a(7) =22205984a(8) =103942144a(9) =39954751040a(10) =183158185984
External references
- oeis: A209375