Consider the family of multigraphs enriched by the species of parts. Sequence gives number of those multigraphs with n labeled edges.
A098628
Consider the family of multigraphs enriched by the species of parts. Sequence gives number of those multigraphs with n labeled edges.
Terms
- a(0) =1a(1) =2a(2) =12a(3) =128a(4) =2224a(5) =56000a(6) =1880832a(7) =79985792a(8) =4161468928a(9) =258415579648
External references
- oeis: A098628