Number of n X n symmetric 0..7 arrays with no element equal to the difference mod 8 of any two of its horizontal and vertical neighbors.

A193812

Number of n X n symmetric 0..7 arrays with no element equal to the difference mod 8 of any two of its horizontal and vertical neighbors.

Terms

    a(0) =8a(1) =307a(2) =28645a(3) =7557081a(4) =6251248141

External references