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Search: id:A132761
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| 0, 18, 38, 60, 84, 110, 138, 168, 200, 234, 270, 308, 348, 390, 434, 480, 528, 578, 630, 684, 740, 798, 858, 920, 984, 1050, 1118, 1188, 1260, 1334, 1410, 1488, 1568, 1650, 1734, 1820, 1908, 1998, 2090, 2184, 2280, 2378, 2478, 2580
(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 + 17).
a(n) = A132760(n)+2*A001477(n) = A132765(n)-6*A001471(n) = A098849(n)+1*A001477(n) = A120071(n)-3*A001477(n) - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Feb 17 2008
a(n)=2*n+a(n-1)+14 (with a(1)=0) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 08 2009]
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EXAMPLE
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For n=2, a(2)=2*2+0+14=18; n=3, a(3)=2*3+18+14=38; n=4, a(4)=2*4+38+14=60 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 08 2009]
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MAPLE
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a:=n->sum(n, j=18..n): seq(a(n), n=17..60); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Feb 17 2008
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MATHEMATICA
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s=0; lst={}; Do[s+=n; AppendTo[lst, s], {n, 18, 6!, 2}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Feb 26 2009]
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CROSSREFS
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Cf. A002378, A120071.
Cf. A001477, A098849, A120071, A132760, A132765.
Sequence in context: A114698 A119127 A084585 this_sequence A079862 A106521 A070686
Adjacent sequences: A132758 A132759 A132760 this_sequence A132762 A132763 A132764
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KEYWORD
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easy,nonn,new
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Aug 28 2007
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