%I #4 Apr 09 2020 14:24:40
%S 1,1,4,8,26,60,184,488,1509,4468,14494,47228,163584,580489,2155219,
%T 8245929,32708045,133615420,562518913,2432472970,10794454457,
%U 49060744260,228113422904,1083584062308,5253168117841,25964917671574,130732997627332,669989546176410,3492408687398352
%N Number of unlabeled loopless multigraphs with n nodes of degree 3 or less.
%F Euler transform of A243391.
%Y Column k=3 of A333893.
%Y Cf. A243391.
%K nonn
%O 0,3
%A _Andrew Howroyd_, Apr 08 2020
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