A168537 The lesser of twin primes p of the form p*q+a+b+c, (p and q are twin primes, p+2=q, a=p-1, b=(p+q)/2, c=q+1).

179, 10709, 32939, 122147, 326609, 1105649, 1516589, 1699109, 2218607, 2787227, 12670037, 17052767, 37106369, 45744929, 74468267, 81784889, 101394827, 142599419, 150148259, 205162649, 377272349, 668196647, 816444899, 853194887

Offset

1,1

Links

Table of n, a(n) for n=1..24.

Example

11*13+10+12+14=179,..

Mathematica

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

Crossrefs

Cf. A168536

Sequence in context: A069796 A177682 A142968 * A130736 A200955 A101995

Adjacent sequences: A168534 A168535 A168536 * A168538 A168539 A168540

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Nov 28 2009

Status

approved