Number of unlabeled connected loopless multigraphs with n edges rooted at one unoriented edge.
A339038
Number of unlabeled connected loopless multigraphs with n edges rooted at one unoriented edge.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =88a(5) =339a(6) =1396a(7) =5915a(8) =26080a(9) =118539a(10) =555678a(11) =2678458a(12) =13262193a(13) =67353325a(14) =350493424a(15) =1866989802a(16) =10171394388a(17) =56631507822a(18) =322011612423
External references
- oeis: A339038