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Search: id:A162829
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| A162829 |
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Positive numbers n such that 2*120*n/(120+n) are integers. |
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+0
1
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| 8, 24, 30, 40, 60, 72, 80, 105, 120, 168, 180, 200, 240, 264, 280, 330, 360, 456, 480, 520, 600, 680, 780, 840, 1032, 1080, 1320, 1480, 1680, 1800, 2280, 2760, 3080, 3480, 4680, 5640, 7080, 9480, 14280, 28680
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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f[a_, b_]:=(a*b)/(a+b)*2; a=120; lst={}; Do[If[f[a, n]==IntegerPart[f[a, n]], AppendTo[lst, n]], {n, 9!}]; lst
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CROSSREFS
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Cf. A162688, A162689, A162690, A162691, A162692, A162693, A162694, A162817, A162818, A162819, A162820, A162821, A162822, A162823, A162824, A162825, A162826, A162828
Sequence in context: A048109 A068781 A038524 this_sequence A000118 A096727 A028660
Adjacent sequences: A162826 A162827 A162828 this_sequence A162830 A162831 A162832
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KEYWORD
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nonn,fini,full
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Jul 13 2009
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EXTENSIONS
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Sign in definition flipped by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 31 2009
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