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Search: id:A090944
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| 1, 6, 140, 270, 672, 1638, 2970, 6200, 8190, 18600, 18620, 27846, 30240, 32760, 55860, 105664, 117800, 167400, 173600, 237510, 242060, 332640, 360360, 539400, 695520, 726180, 753480, 1089270, 1421280
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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T. Goto and S. Shibata, All numbers whose positive divisors have integral harmonic mean up to 300, Math. Comput. 73 (2004), 475-491.
R. K. Guy, Unsolved Problems in Number Theory, B2.
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CROSSREFS
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Cf. A001599, A003601. Different from A090945.
Sequence in context: A075185 A003994 A053467 this_sequence A007340 A122483 A123729
Adjacent sequences: A090941 A090942 A090943 this_sequence A090945 A090946 A090947
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KEYWORD
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nonn
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AUTHOR
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njas, Feb 28 2004
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EXTENSIONS
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More terms from Vladeta Jovovic (vladeta(AT)Eunet.yu), Mar 01 2004
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