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Search: id:A027815
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| 252, 3234, 22176, 108108, 420420, 1387386, 4036032, 10618608, 25729704, 58198140, 124156032, 251839224, 488864376, 912964668, 1647455040, 2883046320, 4908043140, 8149451310, 13228094880, 21031510500
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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 5 contiguous pairs; g.f. 42*(6+5x)/(1-x)^12
C(n+6, 6)*C(n+10, 5) - Zerinvary Lajos (zlaja(AT)freemail.hu), May 26 2005
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CROSSREFS
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Sequence in context: A117281 A152466 A004535 this_sequence A099059 A151610 A024018
Adjacent sequences: A027812 A027813 A027814 this_sequence A027816 A027817 A027818
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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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