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Search: id:A135782
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| A135782 |
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Positive numbers of the form 3x y^2-x^3 (where x,y are positive integers). |
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+0
2
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| 2, 9, 10, 11, 16, 26, 36, 38, 44, 46, 47, 54, 72, 74, 80, 88, 107, 115, 117, 128, 135, 142, 146, 182, 187, 191, 198, 208, 234, 236, 242, 243, 250, 270, 286, 288, 297, 299, 304, 341, 352, 362, 368, 376, 413, 414, 415, 431, 432, 470, 478, 504, 506, 524, 530, 549
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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a = {}; Do[Do[w = 3x y^2 - x^3; If[(w > 0) && w < 3000, AppendTo[a, w]], {x, 1, 1000}], {y, 1, 1000}]; Union[a]
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CROSSREFS
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Cf. A135781.
Sequence in context: A065644 A043065 A077214 this_sequence A037457 A037314 A031443
Adjacent sequences: A135779 A135780 A135781 this_sequence A135783 A135784 A135785
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KEYWORD
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nonn
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Nov 29 2007
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