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Search: id:A134837
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| A134837 |
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Composites with smallest prime factor of composite(k) + largest prime factor of composite(k) = odd composite. |
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+0
1
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| 14, 26, 28, 38, 42, 46, 52, 56, 62, 70, 72, 74, 76, 78, 84, 86, 92, 94, 98, 104, 106, 112, 114, 122, 124, 126, 130, 134, 138, 140, 146, 148, 152, 156, 158, 166, 168, 172, 178, 182, 184, 186, 188, 190, 194, 196, 206, 208, 210
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OFFSET
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1,1
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EXAMPLE
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If k=7, 14(composite)=2*7 and 2+7=9(odd composite), then 14=a(1). If k=16, 26(composite)=2*13 and 2+13=15(odd composite), then 26=a(2). If k=18, 28(composite)=2*2*7 and 2+7=9(odd composite), then 28=a(3), etc.
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CROSSREFS
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Cf. A002808.
Sequence in context: A039604 A030786 A094163 this_sequence A105583 A005277 A079702
Adjacent sequences: A134834 A134835 A134836 this_sequence A134838 A134839 A134840
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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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