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A006241
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Minimal plane trees with n terminal nodes.
(Formerly M0133)
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0
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1, 1, 1, 2, 1, 3, 1, 12, 2, 3, 1, 20, 1, 3, 3, 54, 1, 34, 1, 44, 3, 3, 1, 764, 2, 3, 30, 140, 1, 283, 1, 4470, 3, 3, 3, 10416, 1, 3, 3, 10820, 1, 2227, 1, 2060, 62, 3, 1, 958476, 2, 44, 3, 8204, 1, 59154, 3, 316004, 3
(list; graph; refs; listen; history; internal format)
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