This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A103805 #24 Sep 08 2022 08:45:17
%S A103805 17,23,37,43,83,103,127,197,257,307,313,317,337,373,457,673,677,727,
%T A103805 733,797,863,887,937,953,1013,1063,1283,1303,1597,1667,1693,1777,1783,
%U A103805 1987,1997,2053,2063,2267,2297,2393,2473,2543,2707,2777,2833,2837
%N A103805 Primes p such that 2*p - 27 and 2*p + 27 are positive primes.
%H A103805 Harvey P. Dale, <a href="/A103805/b103805.txt">Table of n, a(n) for n = 1..1000</a>
%t A103805 Select[Range[17,2000], PrimeQ[ # ] && PrimeQ[2# + 27] && PrimeQ[2# - 27] &]
%t A103805 Select[Prime[Range[5,500]],And@@PrimeQ[2#+{27,-27}]&] (* _Harvey P. Dale_, Jul 06 2013 *)
%o A103805 (Magma) [p: p in PrimesUpTo(3000) | IsPrime(2*p-27) and IsPrime(2*p+27)]; // _Vincenzo Librandi_, Nov 16 2010
%Y A103805 Cf. A103802, A103803, A103804.
%K A103805 nonn
%O A103805 1,1
%A A103805 _Zak Seidov_, Feb 16 2005
%E A103805 More terms from _Vincenzo Librandi_, Mar 17 2010