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A046100
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Biquadratefree numbers.
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7
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1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Differs from A023809 at entries 0, 81, 162, 225, 226 etc. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 18 2008]
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LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
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MATHEMATICA
| lst={}; Do[a=0; Do[If[FactorInteger[m][[n, 2]]>4, a=1], {n, Length[FactorInteger[m]]}]; If[a!=1, AppendTo[lst, m]], {m, 5!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 27 2008]
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CROSSREFS
| Cf. A046101.
Sequence in context: A115063 A013938 A023809 * A023757 A115105 A121176
Adjacent sequences: A046097 A046098 A046099 * A046101 A046102 A046103
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KEYWORD
| nonn
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com)
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