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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 (list; graph; listen)
OFFSET

1,4
LINKS

Index entries for sequences related to rooted trees

FORMULA

Shifts left under "AFK" (ordered, size, unlabeled) transform

CROSSREFS

Sequence in context: A127600 A051401 A027039 this_sequence A032027 A005383 A057188

Adjacent sequences: A032006 A032007 A032008 this_sequence A032010 A032011 A032012

KEYWORD

nonn,eigen

AUTHOR

Christian G. Bower (bowerc(AT)usa.net)

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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