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A297203 Forests of label-increasing tree (see Riordan 1978 or 1979 for precise definition). 7
1, 4, 16, 68, 324, 1776, 11204, 80512, 651076 (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..8.

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

CROSSREFS

Cf. A297196, A297197, A297198, A297200, A297201, A297202, A297204.

Sequence in context: A202020 A059606 A228950 * A231297 A231358 A000303

Adjacent sequences:  A297200 A297201 A297202 * A297204 A297205 A297206

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jan 10 2018

STATUS

approved

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Last modified March 23 14:17 EDT 2019. Contains 321431 sequences. (Running on oeis4.)