Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 18 and every element equal to at least one neighbor.

A146508

Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 18 and every element equal to at least one neighbor.

Terms

    a(0) =4a(1) =116a(2) =59082a(3) =38462980a(4) =22016885138

External references