Number of preferential arrangements of n labeled elements such that the minimal number of elements per rank equals 3.
A245856
Number of preferential arrangements of n labeled elements such that the minimal number of elements per rank equals 3.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =20a(4) =70a(5) =112a(6) =1848a(7) =12840a(8) =62700a(9) =591800a(10) =5484908a(11) =40589276a(12) =421291780a(13) =4704380800a(14) =46345716880a(15) =533446290384
External references
- oeis: A245856