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Search: id:A155188
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| A155188 |
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Sophie Germain Strong Twin Prime numbers. |
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+0
2
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| 11, 29, 41, 179, 191, 239, 281, 419, 431, 641, 659, 809, 1019, 1031, 1049, 1229, 1289, 1451, 1481, 1931, 2129, 2141, 2339, 2549, 2969, 3299, 3329, 3359, 3389, 3539, 3821, 3851, 4019, 4271, 4481, 5231, 5279, 5441, 5501, 5639, 5741, 5849, 6131, 6269, 6449
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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lst={}; Do[p0=Prime[n]; p1=Prime[n+1]; p2=Prime[n+2]; If[p1>(p0+p2)/2, If[PrimeQ[p1*2+1], If[PrimeQ[p1-2]||PrimeQ[p1+2], AppendTo[lst, p1]]]], {n, 7!}]; lst
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CROSSREFS
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Cf. A045536, A005384, A051634, A006562, A051635
Sequence in context: A106017 A106065 A156110 this_sequence A045469 A167521 A031338
Adjacent sequences: A155185 A155186 A155187 this_sequence A155189 A155190 A155191
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KEYWORD
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nonn
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 21 2009
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