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Search: id:A099721
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| 0, 3, 20, 63, 144, 275, 468, 735, 1088, 1539, 2100, 2783, 3600, 4563, 5684, 6975, 8448, 10115, 11988, 14079, 16400, 18963, 21780, 24863, 28224, 31875, 35828, 40095, 44688, 49619, 54900, 60543, 66560, 72963, 79764, 86975, 94608, 102675, 111188
(list; graph; listen)
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OFFSET
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0,2
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MAPLE
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a:=n->sum(sum(j+k+n, j=1..n), k=1..n): seq(a(n), n=0..38); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 02 2007
a:=n->add(n+add(n+add(1, j=1..n), j=1..n), j=1..n):seq(a(n), n=0..21); [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Aug 27 2008]
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CROSSREFS
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Cf. A000578 A066023 A001093 A034262 A071568 A011379 A027444 A053698 A033431 A033562 A061317 A098547.
Adjacent sequences: A099718 A099719 A099720 this_sequence A099722 A099723 A099724
Sequence in context: A143582 A132404 A062359 this_sequence A024402 A067600 A006411
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KEYWORD
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nonn
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AUTHOR
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Douglas Winston (douglas.winston(AT)srupc.com), Nov 07 2004
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