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Number of unlabeled connected loopless multigraphs with n edges and degree >= 3 at each node.
5

%I #9 Mar 11 2023 19:48:32

%S 0,0,1,1,2,6,12,32,92,273,869,2989,10722,40599

%N Number of unlabeled connected loopless multigraphs with n edges and degree >= 3 at each node.

%F Inverse Euler transform of A360869.

%Y Row sums of A360866.

%Y Cf. A076864, A360863 (loops allowed), A360868, A360869 (not necessarily connected).

%K nonn,more

%O 1,5

%A _Andrew Howroyd_, Feb 24 2023