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Search: id:A027798
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| 286, 4368, 35490, 203840, 928200, 3564288, 11992344, 36279360, 100524060, 258658400, 624660036, 1427794368, 3109779400, 6489974400, 13037895000, 25310900160, 47640468330, 87185170800, 155514818550, 270951408000
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OFFSET
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0,1
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FORMULA
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Number of 17-subsequences of [ 1, n ] with just 3 contiguous pairs; g.f. 26*(11+3x)/(1-x)^15
C(n+11, 11)*C(n+13, 3) - Zerinvary Lajos (zlaja(AT)freemail.hu), May 10 2005
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CROSSREFS
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Sequence in context: A105921 A090089 A025384 this_sequence A072817 A117994 A130433
Adjacent sequences: A027795 A027796 A027797 this_sequence A027799 A027800 A027801
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KEYWORD
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nonn
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AUTHOR
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thi ngoc dinh (via rkg(AT)cpsc.ucalgary.ca)
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