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Number of simple unlabeled n-node graphs of connectivity 3.
4

%I #26 Nov 28 2021 16:32:03

%S 0,0,0,1,2,13,111,2004,66410,3902344,388624106,65142804740

%N Number of simple unlabeled n-node graphs of connectivity 3.

%H Jens M. Schmidt, <a href="/A324088/a324088.html">Data files in graph6 format</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/k-ConnectedGraph.html">k-Connected Graph.</a>

%F a(n) = A006290(n) - A086216(n). - _Andrew Howroyd_, Sep 04 2019

%Y Column k=3 of A259862.

%Y Cf. A000719, A006290, A052442, A052443, A052445, A086216.

%K nonn,more

%O 1,5

%A _Eric W. Weisstein_

%E Name edited and a(8)-a(11) by _Jens M. Schmidt_, Feb 18 2019

%E a(3)-a(4) corrected by _Andrew Howroyd_, Aug 28 2019

%E a(12) from _Sean A. Irvine_, Nov 28 2021