Consider the family of multigraphs enriched by the species of binary arborescences. Sequence gives number of those multigraphs with n edges and loops.
A098343
Consider the family of multigraphs enriched by the species of binary arborescences. Sequence gives number of those multigraphs with n edges and loops.
Terms
- a(0) =1a(1) =2a(2) =15a(3) =187a(4) =3283a(5) =74825a(6) =2109272a(7) =71217488a(8) =2815154006a(9) =128079232835
External references
- oeis: A098343