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A297198 Forests of label-increasing tree (see Riordan 1978 or 1979 for precise definition). 7
1, 3, 9, 30, 120, 579, 3282, 21375 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

J. Riordan, Forests of label-increasing trees, J. Graph Theory, 3 (1979), 127-133.

LINKS

Table of n, a(n) for n=0..7.

J. Riordan, Forests of label-increasing trees, annotated scanned copy of 1978 pre-publication version.

CROSSREFS

Cf. A297196, A297197, A297200, A297201, A297202, A297203, A297204.

Sequence in context: A091353 A279199 A292758 * A297202 A003604 A292300

Adjacent sequences:  A297195 A297196 A297197 * A297199 A297200 A297201

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jan 10 2018

STATUS

approved

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Last modified February 19 12:09 EST 2019. Contains 320310 sequences. (Running on oeis4.)