login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

List of 4-tuples of twin primes q, p, p+2 and q+2 such that 2*q<p<p+2<2*(q+2).
3

%I #3 Mar 30 2012 18:52:40

%S 5,11,13,7,29,59,61,31,659,1319,1321,661,809,1619,1621,811,2129,4259,

%T 4261,2131,2549,5099,5101,2551,3329,6659,6661,3331,3389,6779,6781,

%U 3391,5849,11699,11701,5851,6269,12539,12541,6271,10529,21059,21061,10531

%N List of 4-tuples of twin primes q, p, p+2 and q+2 such that 2*q<p<p+2<2*(q+2).

%C The first number q in each quadruplet is in A069142 (equivalent to selecting twin primes q which are also Sophie-Germain primes). [From _R. J. Mathar_, May 06 2010]

%Y Cf. A077800, A045536.

%K nonn,tabf

%O 1,1

%A _Juri-Stepan Gerasimov_, Apr 26 2010, May 01 2010, May 07 2010

%E Corrected (2131 replaced by 3331) by _R. J. Mathar_, May 06 2010