Number of real n X n symmetric (+1,-1) matrices with positive permanent.
A118995
Number of real n X n symmetric (+1,-1) matrices with positive permanent.
Terms
- a(0) =1a(1) =4a(2) =32a(3) =592a(4) =11904a(5) =1192384a(6) =134217728a(7) =41896879104
External references
- oeis: A118995