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A027814
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126*(n+1)*C(n+5,9)/5.
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0
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126, 1512, 9702, 44352, 162162, 504504, 1387386, 3459456, 7963956, 17153136, 34918884, 67721472, 125919612, 225629712, 391270572, 658982016, 1081142370, 1732250520, 2716483770, 4177293120, 6309453150
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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FORMULA
| Number of 15-subsequences of [ 1, n ] with just 5 contiguous pairs; g.f. 126*(1+x)/(1-x)^11
C(n+5, 5)*C(n+9, 5). - Zerinvary Lajos (zlaja(AT)freemail.hu), Apr 18 2005
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MATHEMATICA
| Table[126(n+1)Binomial[n+5, 9]/5, {n, 4, 40}] (* From Harvey P. Dale, Mar 13 2011 *)
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CROSSREFS
| Sequence in context: A194717 A002953 A027805 * A109146 A189345 A172140
Adjacent sequences: A027811 A027812 A027813 * A027815 A027816 A027817
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KEYWORD
| nonn
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AUTHOR
| thi ngoc dinh (via rkg(AT)cpsc.ucalgary.ca)
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