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A111563
Number of connected outerplanar graphs on n unlabeled nodes.
+0
2
1, 1, 2, 5, 13, 46, 172, 777, 3783, 20074, 111604, 646409, 3846640, 23410035, 144965988, 910898943, 5794179218, 37248630398, 241676806702, 1580880366039, 10416314047854, 69080674190341, 460841447382976, 3090747326749823
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Maintained by
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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.
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