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Search: id:A132756
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| 0, 14, 29, 45, 62, 80, 99, 119, 140, 162, 185, 209, 234, 260, 287, 315, 344, 374, 405, 437, 470, 504, 539, 575, 612, 650, 689, 729, 770, 812, 855, 899, 944, 990, 1037, 1085, 1134, 1184, 1235, 1287, 1340, 1394, 1449, 1505, 1562, 1620
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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a(n) = n*(n+27)/2.
If we define f(n,i,a)=sum(binomial(n,k)*stirling1(n-k,i)*product(-a-j,j=0..k-1),k=0..n-i), then a(n) = -f(n,n-1,14), for n>=1. [From Milan R. Janjic (agnus(AT)blic.net), Dec 20 2008]
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MAPLE
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a:=n->sum(denom (k/(k+3)), k=11..n): seq(a(n), n=10..56); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 31 2008
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MATHEMATICA
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i=-13; s=0; lst={}; Do[s+=n+i; If[s>=0, AppendTo[lst, s]], {n, 0, 6!, 1}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Oct 29 2008]
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CROSSREFS
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Cf. A000217, A056126.
Sequence in context: A041382 A047725 A046045 this_sequence A124681 A041386 A041388
Adjacent sequences: A132753 A132754 A132755 this_sequence A132757 A132758 A132759
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KEYWORD
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easy,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Aug 28 2007
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