3-enumeration of 2n+1 X 2n+1 vertically symmetric alternating-sign matrices.
A059486
3-enumeration of 2n+1 X 2n+1 vertically symmetric alternating-sign matrices.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =126a(4) =16038a(5) =10320453a(6) =33590259846
External references
- oeis: A059486