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 A288542 Number of Dyck paths of semilength n such that the minimal number of peaks over all positive levels equals three. 2
 1, 0, 0, 0, 4, 29, 90, 188, 345, 825, 3089, 13450, 54526, 198846, 668430, 2155731, 6963768, 23265733, 81163559, 292726843, 1073684818, 3953422052, 14517741411, 53096290021, 193719344526, 706944953011, 2586796240687, 9505841335788, 35102295346482 (list; graph; refs; listen; history; text; internal format)
 OFFSET 3,5 LINKS Alois P. Heinz, Table of n, a(n) for n = 3..300 Wikipedia, Counting lattice paths EXAMPLE : a(7) = 4: : : /\/\/\ /\/\/\ /\/\/\ /\/\/\ : /\/\/\/ \ /\/\/ \/\ /\/ \/\/\ / \/\/\/\ . CROSSREFS Column k=3 of A288387. Cf. A000108. Sequence in context: A042379 A184301 A192025 * A024394 A199399 A211545 Adjacent sequences: A288539 A288540 A288541 * A288543 A288544 A288545 KEYWORD nonn AUTHOR Alois P. Heinz, Jun 11 2017 STATUS approved

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Last modified December 11 10:45 EST 2023. Contains 367722 sequences. (Running on oeis4.)