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Search: id:A019584
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| 0, 0, 1, 18, 108, 400, 1125, 2646, 5488, 10368, 18225, 30250, 47916, 73008, 107653, 154350, 216000, 295936, 397953, 526338, 685900, 882000, 1120581, 1408198, 1752048, 2160000, 2640625, 3203226
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OFFSET
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0,4
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FORMULA
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a(n) = Sum[Sum[(i^3+j^3)/2, {i, 1, n-2}], {j, 1, n-2}] - Alexander Adamchuk (alex(AT)kolmogorov.com), Oct 24 2004
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MAPLE
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a:=n->sum(sum(n^3/4, j=0..n), k=0..n): seq(a(n), n=-1..26); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 09 2007
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MATHEMATICA
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Table[Sum[Sum[(i^3+j^3)/2, {i, 1, n-2}], {j, 1, n-2}], {n, 1, 30}]
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CROSSREFS
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Sequence in context: A002165 A008654 A060787 this_sequence A041622 A125328 A126486
Adjacent sequences: A019581 A019582 A019583 this_sequence A019585 A019586 A019587
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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