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A097998
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Number of connected outerplanar graphs on n labeled nodes.
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3
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1, 1, 4, 37, 602, 14436, 458062, 18029992, 845360028, 45938606320, 2836966508216, 196156795008384, 15008752290350656, 1258841795197091392, 114838947237881287800, 11319937495659268412416
(list; graph; refs; listen; history; internal format)
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