A066317 Number of rooted identity (asymmetric) planar trees that can be turned over.

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

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