Number of 12 X 12 arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to n.
A156410
Number of 12 X 12 arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to n.
Terms
- a(0) =1a(1) =1384a(2) =217500a(3) =8019000a(4) =100368324a(5) =534495232a(6) =1814137996a(7) =8671131376a(8) =40142592042a(9) =110049447136a(10) =219088073110a(11) =659368209568
External references
- oeis: A156410