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A130176
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Numbers n with property that the largest prime factor is a Sophie Germain prime.
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1
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2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 23, 24, 25, 27, 29, 30, 32, 33, 36, 40, 41, 44, 45, 46, 48, 50, 53, 54, 55, 58, 60, 64, 66, 69, 72, 75, 77, 80, 81, 82, 83, 87, 88, 89, 90, 92, 96, 99, 100, 106, 108, 110, 113, 115, 116, 120, 121, 123, 125, 128, 131, 132
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Prime terms 2,3,5,11,23,29,... are in A005384.
A156541 is a subsequence. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 10 2009]
A156660(A006530(a(n))) = 1. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Dec 03 2009]
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CROSSREFS
| Cf. A005384.
Sequence in context: A163101 A157465 A067942 * A156541 A031143 A055492
Adjacent sequences: A130173 A130174 A130175 * A130177 A130178 A130179
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KEYWORD
| nonn
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AUTHOR
| Zak Seidov (zakseidov(AT)yahoo.com), May 14 2007
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