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A066317 Number of rooted identity (asymmetric) planar trees that can be turned over. 0
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..27.

Index entries for sequences related to rooted trees

FORMULA

a(n)=A066316(n-1)+1.

CROSSREFS

Sequence in context: A103063 A220191 A030228 * A027104 A019048 A289604

Adjacent sequences:  A066314 A066315 A066316 * A066318 A066319 A066320

KEYWORD

nonn

AUTHOR

Christian G. Bower, Dec 13 2001

STATUS

approved

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Last modified January 21 18:00 EST 2019. Contains 319349 sequences. (Running on oeis4.)