Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 7.

A156444

Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 7.

Terms

    a(0) =6a(1) =0a(2) =616a(3) =635a(4) =78688a(5) =149480a(6) =17605696a(7) =69492920a(8) =8671131376a(9) =72256187200

External references