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A259467 Erroneous version of A003092. 0
1, 2, 36, 1200, 57000, 3477600, 157826240 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

E. M. Palmer and R. C. Read, on the number of plane 2-trees, J. Lond. Math. Soc., 6 (1973), 583-592.

LINKS

Table of n, a(n) for n=1..7.

E. M. Palmer and R. C. Read, On the number of plane 2-trees, J. Lond. Math. Soc., 6 (1973), 583-592. [Annotated and corrected scanned copy]

CROSSREFS

Sequence in context: A305596 A210899 A302903 * A003092 A187535 A263421

Adjacent sequences:  A259464 A259465 A259466 * A259468 A259469 A259470

KEYWORD

dead

STATUS

approved

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Last modified January 27 18:40 EST 2022. Contains 350611 sequences. (Running on oeis4.)