Number of 4-cycles in the n-Bruhat graph.
A317487
Number of 4-cycles in the n-Bruhat graph.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =6a(4) =90a(5) =1080a(6) =12600a(7) =151200a(8) =1905120a(9) =25401600a(10) =359251200a(11) =5388768000a(12) =85621536000
External references
- oeis: A317487