Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 64.
A156520
Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 64.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =7a(4) =19a(5) =50198a(6) =788009a(7) =1184902962a(8) =55064648562
External references
- oeis: A156520