Congruence-uniform lattices on n unlabeled nodes.
A292790
Congruence-uniform lattices on n unlabeled nodes.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =9a(6) =22a(7) =60a(8) =174a(9) =534a(10) =1720a(11) =5767a(12) =20013a(13) =71545
External references
- oeis: A292790