Vertically indecomposable lattices on n labeled nodes.
A058803
Vertically indecomposable lattices on n labeled nodes.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =0a(4) =12a(5) =140a(6) =2910a(7) =83202a(8) =3170216a(9) =154933704a(10) =9441522810a(11) =701275774430
External references
- oeis: A058803