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Search: id:A144568
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| A144568 |
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Composites of the form : sum of prime factors of composite(n)=prime and largest prime factor of composite(n)-smallest prime factor of composite(n)=nonprime. |
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+0
1
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| 6, 12, 22, 34, 54, 58, 82, 88, 96, 108, 117, 118, 136, 142, 147, 148, 153, 158, 165, 176, 184, 189, 198, 202, 207
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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If 6(composite(n=2))=2*3, 2+3=5(prime) and 3-2=1(nonprime), then 6=a(1). If 12(composite(n=6))=2*2*3, 2+2+3=7(prime) and 3-2=1(nonprime), then 12=a(2). If 22(composite(n=13))=2*11, 2+11=13(prime) and 11-2=9(nonprime), then 22=a(3), etc.
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CROSSREFS
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Cf. A000040, A002808, A141468.
Sequence in context: A141808 A144187 A055458 this_sequence A078472 A005694 A081512
Adjacent sequences: A144565 A144566 A144567 this_sequence A144569 A144570 A144571
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KEYWORD
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nonn
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AUTHOR
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Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jan 04 2009
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