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A032009
Number of planted planar trees (n+1 nodes) where any 2 subtrees extending from the same node have a different number of nodes.
+0
2
1, 1, 1, 3, 5, 13, 35, 95, 249, 691, 2007, 5719, 16823, 49371, 146755, 438301, 1319343, 3981699, 12129477, 36987253, 113456615, 348921105, 1077206189, 3332120237, 10347481901, 32183230157, 100372658801, 313633257399
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Maintained by
N. J. A. Sloane
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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.
AT&T Labs Research
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