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A155188 Sophie Germain Strong Twin Prime numbers. 1
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; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..45.

MATHEMATICA

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

CROSSREFS

Cf. A045536, A005384, A051634, A006562, A051635

Sequence in context: A106065 A247089 A156110 * A045469 A219790 A249436

Adjacent sequences:  A155185 A155186 A155187 * A155189 A155190 A155191

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Jan 21 2009

STATUS

approved

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Last modified October 18 05:26 EDT 2019. Contains 328146 sequences. (Running on oeis4.)