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A333894 Number of unlabeled loopless multigraphs with n nodes of degree 3 or less. 1

%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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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)