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Search: id:A131643
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| A131643 |
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Cubes that are also sums of several consecutive cubes. |
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+0
2
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| 216, 8000, 64000, 216000, 343000, 5832000, 35937000, 157464000, 1540798875, 3951805941, 22069810125, 23295638016, 58230605376, 170400029184, 4767078987000, 19814511816000, 241152896222784, 565199024832000, 731189187729000, 5399901725184000, 13389040129314816, 15517248640897024
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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All entries have the format A000537(j)-A000537(i-1) with 1<=i<j, for example (j,i)=(5,3), (14,11), (22,3), (30,6), (34,15), (69,6), (109,11). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 14 2007
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EXAMPLE
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216 = 27+64+125.
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MATHEMATICA
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Select[Union[ Flatten[Table[ Plus @@ Table[i^3, {i, k, j}], {k, 1000}, {j, k + 1, 1000}]]], # <= 1000^3 && IntegerQ[ #^(1/3)] &]
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CROSSREFS
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Sequence in context: A128964 A096290 A017595 this_sequence A046234 A133052 A078204
Adjacent sequences: A131640 A131641 A131642 this_sequence A131644 A131645 A131646
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KEYWORD
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nonn
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AUTHOR
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Tanya Khovanova (tanyakh(AT)yahoo.com), Sep 08 2007
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 14 2007
More terms from Donovan Johnson (donovan.johnson(AT)yahoo.com), Mar 09 2008
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