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A066317
Number of rooted identity (asymmetric) planar trees that can be turned over.
+0
1
1, 1, 1, 1, 2, 6, 25, 92, 341, 1225, 4366, 15522, 55312, 197965, 712244, 2577106, 9375361, 34284972, 125977465, 464938190, 1722817416, 6407307544, 23909159418, 89491715106, 335908316845, 1264097675776, 4768430557021
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.
AT&T Labs Research
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