Number of series-reduced (or homeomorphically irreducible) graphs with loops on n labeled nodes.
A060516
Number of series-reduced (or homeomorphically irreducible) graphs with loops on n labeled nodes.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =26a(4) =328a(5) =9700a(6) =711836a(7) =111817032a(8) =35130791054
External references
- oeis: A060516