

A168536


The lesser of twin primes p such that p*q+a+b+c are also the lesser of twin primes, (p and q are twin primes, p+2=q, a=p1,b=(p+q)/2,c=q+1).


1



11, 101, 179, 347, 569, 1049, 1229, 1301, 1487, 1667, 3557, 4127, 6089, 6761, 8627, 9041, 10067, 11939, 12251, 14321, 19421, 25847, 28571, 29207, 30011, 30869, 31541, 33329, 33587, 36791, 38459, 39509, 39839, 40427, 43049, 49529, 50591, 50969
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..38.


MATHEMATICA

lst={}; Do[p=Prime[n]; q=p+2; If[PrimeQ[q], a=p1; b=p+1; c=q+1; If[PrimeQ[p*q+a+b+c]&&PrimeQ[p*q+a+b+c+2], AppendTo[lst, p]]], {n, 8!}]; lst


CROSSREFS

Cf. A001359, A126334, A128550, A128551
Sequence in context: A156753 A118592 A156617 * A089716 A084987 A083185
Adjacent sequences: A168533 A168534 A168535 * A168537 A168538 A168539


KEYWORD

nonn


AUTHOR

Vladimir Joseph Stephan Orlovsky, Nov 28 2009


STATUS

approved



