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Search: id:A027773
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| 13, 196, 1575, 8960, 40460, 154224, 515508, 1550400, 4273290, 10943240, 26313518, 59907456, 130007500, 270415600, 541574100, 1048380480, 1968053535, 3592795500, 6393845325, 11115955200, 18914492520
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OFFSET
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0,1
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FORMULA
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Number of 15-subsequences of [ 1, n ] with just 1 contiguous pair; g.f. (13+x)/(1-x)^15
C(n+13, 13)*C(n+13, 1) - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 08 2005
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CROSSREFS
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Sequence in context: A000563 A159196 A015690 this_sequence A099271 A081796 A140536
Adjacent sequences: A027770 A027771 A027772 this_sequence A027774 A027775 A027776
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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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