Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 17.

A156467

Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 17.

Terms

    a(0) =2a(1) =2a(2) =44a(3) =76a(4) =1804a(5) =8172a(6) =1022492a(7) =7436362a(8) =4686068520a(9) =71763897760

External references