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A025762 9th-order Vatalan numbers (generalization of Catalan numbers). 1
1, 1, 37, 1909, 112483, 7123123, 472012183, 32269160215, 2256940619488, 160620490138312, 11588554266307408, 845405636848547320, 62239772654736987376, 4617428134374127211320, 344799253687326693132448 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..200

FORMULA

G.f.: 9/(8 + (1 - 81*x)^(1/9)).

MATHEMATICA

Table[SeriesCoefficient[9/(8 + (1 - 81 x)^(1/9)), {x, 0, n}], {n, 0, 20}] (* Vincenzo Librandi, Dec 29 2012 *)

CROSSREFS

Sequence in context: A260667 A130013 A088872 * A297313 A297505 A099807

Adjacent sequences:  A025759 A025760 A025761 * A025763 A025764 A025765

KEYWORD

nonn

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified February 27 10:25 EST 2021. Contains 341649 sequences. (Running on oeis4.)