Number of preferential arrangements of n labeled elements when at least k=three ranks are required.
A102232
Number of preferential arrangements of n labeled elements when at least k=three ranks are required.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =6a(4) =60a(5) =510a(6) =4620a(7) =47166a(8) =545580a(9) =7086750a(10) =102246540a(11) =1622630526a(12) =28091563500a(13) =526858340190
External references
- oeis: A102232