Number of 4-cycles in the n-transposition graph.
A300843
Number of 4-cycles in the n-transposition graph.
Terms
- a(0) =0a(1) =0a(2) =9a(3) =162a(4) =2250a(5) =29700a(6) =396900a(7) =5503680a(8) =80015040a(9) =1224720000a(10) =19758816000a(11) =335899872000
External references
- oeis: A300843