Consider the family of multigraphs enriched by the species of binary arborescences. Sequence gives number of those multigraphs with n loops and arcs.
A098344
Consider the family of multigraphs enriched by the species of binary arborescences. Sequence gives number of those multigraphs with n loops and arcs.
Terms
- a(0) =1a(1) =2a(2) =21a(3) =378a(4) =9819a(5) =338978a(6) =14802427a(7) =790660090a(8) =50405704473
External references
- oeis: A098344