Number of ordered partitions of [n] such that at least two parts have the same size.
A262047
Number of ordered partitions of [n] such that at least two parts have the same size.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =6a(4) =66a(5) =510a(6) =4280a(7) =46536a(8) =542962a(9) =7074654a(10) =101914512a(11) =1621871196a(12) =28087868160a(13) =526841965260
External references
- oeis: A262047