Sophie Germain primes p surrounded by Sophie Germain primes.

Terms

a(0) =2a(1) =3a(2) =20759a(3) =103619a(4) =145109a(5) =148853a(6) =199109a(7) =291503a(8) =353459a(9) =356591a(10) =362759a(11) =367733a(12) =475523a(13) =521831a(14) =527123a(15) =552059a(16) =603191a(17) =609809a(18) =639839a(19) =691979a(20) =726419a(21) =810809a(22) =812939a(23) =825491a(24) =940421a(25) =980471a(26) =998213a(27) =1103561a(28) =1117793a(29) =1132811