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A244197 Number of ballot sequences of length n having largest descent 1. 2
1, 4, 13, 37, 100, 265, 694, 1828, 4815, 12867, 34562, 93921, 257222, 711872, 1983045, 5574177, 15766834, 44933155, 128790245, 371524353, 1077235107, 3141337862, 9203553458, 27098846070, 80132014258, 238015962210, 709753556178, 2125009374481, 6385306585616 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,2

LINKS

Table of n, a(n) for n=3..31.

CROSSREFS

Column k=1 of A238128.

Sequence in context: A226866 A048474 A054761 * A300985 A080145 A097551

Adjacent sequences:  A244194 A244195 A244196 * A244198 A244199 A244200

KEYWORD

nonn

AUTHOR

Joerg Arndt and Alois P. Heinz, Jun 22 2014

STATUS

approved

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Last modified May 22 00:25 EDT 2019. Contains 323472 sequences. (Running on oeis4.)