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A152015
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k(n)=n^3-n^2-n.
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1
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0, -1, 2, 15, 44, 95, 174, 287, 440, 639, 890, 1199, 1572, 2015, 2534, 3135, 3824, 4607, 5490, 6479, 7580, 8799, 10142, 11615, 13224, 14975, 16874, 18927, 21140, 23519, 26070, 28799, 31712, 34815, 38114, 41615, 45324, 49247, 53390, 57759, 62360
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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MAPLE
| a:=n->sum(-1+sum(1+sum(1, i=2..n), j=2..n), k=1..n):seq(a(n), n=0..44); # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Dec 22 2008]
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MATHEMATICA
| lst={}; Do[AppendTo[lst, n^3-n^2-n], {n, 0, 5!}]; lst
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CROSSREFS
| Sequence in context: A200156 A032016 A001007 * A162256 A041719 A133777
Adjacent sequences: A152012 A152013 A152014 * A152016 A152017 A152018
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KEYWORD
| sign
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AUTHOR
| Vladimir Orlovsky (4vladimir(AT)gmail.com), Nov 20 2008
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