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A288543 Number of Dyck paths of semilength n such that the minimal number of peaks over all positive levels equals four. 2
1, 0, 0, 0, 0, 5, 56, 240, 620, 1220, 2201, 4501, 14231, 67597, 332768, 1455695, 5611277, 19525749, 63217514, 197236391, 617466587, 2015606482, 7005348816, 25768091554, 97973413377, 375778678054, 1431049415936, 5374397862025, 19899453137028, 72900123590938 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,6

LINKS

Alois P. Heinz, Table of n, a(n) for n = 4..300

Wikipedia, Counting lattice paths

CROSSREFS

Column k=4 of A288387.

Cf. A000108.

Sequence in context: A072318 A174514 A041995 * A062125 A030060 A247710

Adjacent sequences:  A288540 A288541 A288542 * A288544 A288545 A288546

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Jun 11 2017

STATUS

approved

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Last modified April 14 18:48 EDT 2021. Contains 342951 sequences. (Running on oeis4.)