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A099436 Number of simple connected class-1 graphs on n nodes. 2


%S 1,1,1,6,17,109,821,11050,260150

%N Number of simple connected class-1 graphs on n nodes.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Class1Graph.html">Class 1 Graph</a>

%H Gordon Royle, <a href="http://people.csse.uwa.edu.au/gordon/graphs/#class2">Small Graphs: Class 2 Graphs</a>.

%Y Cf. A099435 (number of simple class-1 graphs on n nodes).

%Y Cf. A099438 (number of connected class-2 graphs on n nodes).

%K nonn,more

%O 1,4

%A _Eric W. Weisstein_, Oct 15 2004

%E More terms from _Vladeta Jovovic_, Jun 30 2007

%E Verified up to a(9) by _Eric W. Weisstein_, Nov 21 2011

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Last modified November 27 03:56 EST 2021. Contains 349345 sequences. (Running on oeis4.)