Number of n X n symmetric (0,1) matrices that achieve the record mentioned in A191965.
A191966
Number of n X n symmetric (0,1) matrices that achieve the record mentioned in A191965.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =12a(4) =15a(5) =900a(6) =6615a(7) =90720a(8) =1995840a(9) =1360800a(10) =197920800a(11) =359251200a(12) =1297296000a(13) =7264857600a(14) =119870150400
External references
- oeis: A191966