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Search: id:A027795
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| 120, 1485, 9900, 47190, 180180, 585585, 1681680, 4375800, 10501920, 23556390, 49884120, 100524060, 193993800, 360380790, 647214480, 1127722200, 1912224600, 3163606875, 5118012900, 8112154050, 12618906300
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OFFSET
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0,1
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FORMULA
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Number of 14-subsequences of [ 1, n ] with just 3 contiguous pairs; g.f. 15*(8+3x)/(1-x)^12
C(n+8, 8)*C(n+10, 3) - Zerinvary Lajos (zlaja(AT)freemail.hu), May 10 2005
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CROSSREFS
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Sequence in context: A167549 A052776 A052770 this_sequence A053567 A056270 A001118
Adjacent sequences: A027792 A027793 A027794 this_sequence A027796 A027797 A027798
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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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