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A140809
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10^n-th squarefree number.
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0
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2, 15, 165, 1639, 16447, 164499, 1644919, 16449370, 164493391, 1644934082, 16449340710, 164493406181, 1644934067513, 16449340668749, 164493406685661, 1644934066850411, 16449340668485217, 164493406684817903, 1644934066848209911
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OFFSET
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0,1
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COMMENTS
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a(n)=A005117(10^n) with offset 0.
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REFERENCES
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J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 165, pp 53, Ellipses, Paris 2008.
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LINKS
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Table of n, a(n) for n=0..18.
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CROSSREFS
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Cf. A005117.
Sequence in context: A204679 A259608 A317278 * A153852 A177396 A324151
Adjacent sequences: A140806 A140807 A140808 * A140810 A140811 A140812
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KEYWORD
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nonn
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AUTHOR
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Lekraj Beedassy, Jul 15 2008
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EXTENSIONS
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a(10)-a(12) from Donovan Johnson, Nov 06 2010
a(13)-a(18) from Robert Gerbicz, Nov 22 2010
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STATUS
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approved
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