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A243777
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Number of Dyck paths of semilength n having exactly eight (possibly overlapping) occurrences of the consecutive step pattern given by the binary expansion of n, where 1=U=(1,1) and 0=D=(1,-1).
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3
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1, 0, 0, 0, 0, 3780, 0, 0, 46, 20, 0, 16356705, 910111, 0, 1430, 45077670, 755820, 518221227, 101454300, 1479060, 0, 43816171893552, 0, 420732, 54663267285, 583180547204, 181720848039484, 60770152697265, 2020797438130380, 52163677215449, 31943272670595
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OFFSET
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10,6
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LINKS
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EXAMPLE
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a(10) = 1: UUDUDUDUDUDUDUDUDUDD.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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