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Search: id:A027797
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| 220, 3146, 24024, 130130, 560560, 2042040, 6534528, 18845112, 49884120, 122862740, 284524240, 624660036, 1308811504, 2631351800, 5099265600, 9561123000, 17401243860, 30826185390, 53279826600, 90034894950
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OFFSET
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0,1
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FORMULA
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Number of 16-subsequences of [ 1, n ] with just 3 contiguous pairs; g.f. 22*(10+3x)/(1-x)^14
C(n+10, 10)*C(n+12, 3) - Zerinvary Lajos (zlaja(AT)freemail.hu), May 10 2005
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CROSSREFS
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Sequence in context: A135807 A102073 A002025 this_sequence A055663 A022042 A095702
Adjacent sequences: A027794 A027795 A027796 this_sequence A027798 A027799 A027800
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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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