Number of isomorphism classes of irreducible posets with n labeled points.
A046907
Number of isomorphism classes of irreducible posets with n labeled points.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =7a(5) =31a(6) =184a(7) =1351a(8) =12524a(9) =146468a(10) =2177570a(11) =41374407a(12) =1008220289a(13) =31559446774
External references
- oeis: A046907