| 2, 3, 3, 5, 7, 5, 7, 11, 5, 13, 11, 17, 7, 19, 13, 23, 7, 17, 11, 19, 29, 31, 13, 23, 37, 11, 41, 17, 43, 29, 13, 31, 47, 19, 53, 37, 23, 59, 17, 11, 61, 41, 43, 19, 67, 47, 71, 13, 29, 73, 31, 79, 53, 23, 83, 13, 59, 89, 61, 37, 17, 97, 67, 101, 29, 41, 103, 19, 71, 107, 43, 31
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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a(n)=A006530(A001358(n))=n/A020639(A001358(n)); A001358(n)=A084126(n)*a(n).
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LINKS
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Zak Seidov, Table of n, a(n) for n = 1..1000
Eric Weisstein's World of Mathematics, Semiprime
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CROSSREFS
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Cf. A014673, A061299, A068318, A087718, A087794, A089994, A089995, A096932, A106550, A106554, A108542, A126663, A131284, A138510, A138511. current versions:.
Sequence in context: A077558 A122444 A066072 this_sequence A089934 A113460 A113470
Adjacent sequences: A084124 A084125 A084126 this_sequence A084128 A084129 A084130
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 15 2003
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EXTENSIONS
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Corrected by T. D. Noe (noe(AT)sspectra.com), Nov 15 2006
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