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A032010 Number of rooted planar trees where any 2 subtrees extending from same node have a different number of nodes. 0
1, 1, 1, 2, 4, 9, 23, 62, 164, 449, 1263, 3636, 10500, 30859, 90895, 271178, 810918, 2447715, 7406439, 22589066, 68974940, 211989119, 652180385, 2016872920, 6242930834, 19412141273, 60390977831, 188627507266 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

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

C. G. Bower, Transforms (2)

Index entries for sequences related to rooted trees

FORMULA

"CFK" (Necklace, size, unlabeled) transform of A032009 (shifted right one place)

CROSSREFS

Sequence in context: A027071 A027133 A213683 * A032028 A190277 A274882

Adjacent sequences:  A032007 A032008 A032009 * A032011 A032012 A032013

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified February 19 22:04 EST 2018. Contains 299357 sequences. (Running on oeis4.)