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A032027 Number of planted planar trees (n+1 nodes) where any 2 subtrees extending from the same node are different. 1
1, 1, 1, 3, 5, 13, 35, 95, 255, 715, 2081, 6003, 17645, 52127, 155863, 468129, 1415521, 4301055, 13134789, 40275109, 123970669, 382919917, 1186475687, 3686899725, 11487023793, 35876838669, 112304155021, 352276801491 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..28.

Index entries for sequences related to rooted trees

FORMULA

Shifts left under "AGK" (ordered, elements, unlabeled) transform.

CROSSREFS

Sequence in context: A027039 A283844 A032009 * A005383 A175257 A190423

Adjacent sequences:  A032024 A032025 A032026 * A032028 A032029 A032030

KEYWORD

nonn,eigen

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified February 21 19:49 EST 2018. Contains 299423 sequences. (Running on oeis4.)