Number of n X n symmetric 0..4 arrays with no element equal to the sum mod 5 of all its horizontal and vertical neighbors.
A193611
Number of n X n symmetric 0..4 arrays with no element equal to the sum mod 5 of all its horizontal and vertical neighbors.
Terms
- a(0) =4a(1) =64a(2) =4096a(3) =1048580a(4) =1073745920
External references
- oeis: A193611