Number of 17 X 17 arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to n.
A156425
Number of 17 X 17 arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to n.
Terms
- a(0) =1a(1) =1680a(2) =0a(3) =0a(4) =320743643010a(6) =0a(7) =0a(10) =0a(11) =0
External references
- oeis: A156425