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Search: id:A099764
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| A099764 |
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a(n) = n^2 * (n+1)^2 * (n+2)^2. |
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+0
1
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| 0, 36, 576, 3600, 14400, 44100, 112896, 254016, 518400, 980100, 1742400, 2944656, 4769856, 7452900, 11289600, 16646400, 23970816, 33802596, 46785600, 63680400, 85377600, 112911876, 147476736, 190440000, 243360000, 308002500, 386358336
(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)=numbperm(n,3)^2, n>=2 . - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 26 2007
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MAPLE
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seq(numbperm (n, 3)^2, n=2..28); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 26 2007
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CROSSREFS
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Sequence in context: A008657 A134289 A081447 this_sequence A003841 A126926 A129839
Adjacent sequences: A099761 A099762 A099763 this_sequence A099765 A099766 A099767
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KEYWORD
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easy,nonn
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AUTHOR
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Kari Lajunen (Kari.Lajunen(AT)Welho.com), Nov 11 2004
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