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A032306 Number of rooted trees with leaves of 2 colors where any 2 subtrees extending from the same node have a different number of nodes. 0
2, 2, 2, 6, 10, 26, 66, 174, 442, 1202, 3298, 9166, 25674, 72810, 206826, 595150, 1712634, 4978458, 14494130, 42502030, 124660402, 368221002, 1087321354, 3229266742, 9591013738, 28624735962, 85404444970 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

Index entries for sequences related to rooted trees

FORMULA

Shifts left under "EFK" (unordered, size, unlabeled) transform.

CROSSREFS

Sequence in context: A052537 A024945 A186507 * A227847 A058756 A237614

Adjacent sequences:  A032303 A032304 A032305 * A032307 A032308 A032309

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified February 20 07:04 EST 2018. Contains 299359 sequences. (Running on oeis4.)