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Search: id:A145351
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| A145351 |
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Composites of the form : smallest prime factor of composite(n)+largest prime factor of composite(n)=prime and n=prime. |
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+0
1
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| 6, 10, 22, 44, 54, 58, 66, 82, 96, 108, 120, 136, 142, 144, 200, 204
(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(prime)))=2*3 and 2+3=5(prime), then 6=a(1). If 10(composite(n=5(prime)))=2*5 and 2+5=7(prime), then 10=a(2). If 22(composite(n=13(prime)))=2*13 and 2+13(prime), then 22=a(3). If 44(composite(n=29(prime)))=2*2*11 and 2+2+11(prime), then 44=a(4), etc.
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CROSSREFS
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Cf. A000040, A002808.
Sequence in context: A108605 A063765 A085712 this_sequence A166305 A047651 A079426
Adjacent sequences: A145348 A145349 A145350 this_sequence A145352 A145353 A145354
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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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