Reduced partially ordered sets (posets) with n labeled elements.
A066302
Reduced partially ordered sets (posets) with n labeled elements.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =7a(4) =75a(5) =1531a(6) =50673a(7) =2613703a(8) =202180723a(9) =22853355895
External references
- oeis: A066302