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%I #7 Nov 08 2013 23:36:29
%S 5,9,33,117,391,1350,4546,15753,55053,196185
%N Number of distinct finite languages over 3-ary alphabet, whose minimum regular expression has ordinary length n.
%H Hermann Gruber, Jonathan Lee, and Jeffrey Shallit, <a href="http://arxiv.org/abs/1204.4982">Enumerating regular expressions and their languages</a>, arXiv:1204.4982v1 [cs.FL]
%K nonn,hard
%O 1,1
%A _Hermann Gruber_, Apr 26 2012