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 A103803 #18 Sep 08 2022 08:45:17
%S A103803 11,13,19,23,29,37,41,43,47,61,71,83,89,107,113,127,139,149,191,197,
%T A103803 223,281,293,331,379,419,421,461,463,491,499,503,523,569,593,601,653,
%U A103803 719,733,769,797,811,821,839,881,887,1049,1063,1129,1163,1181,1213,1231
%N A103803 Primes p such that both 2p - 15 and 2p + 15 are primes.
%H A103803 Harvey P. Dale, <a href="/A103803/b103803.txt">Table of n, a(n) for n = 1..1000</a>
%F A103803 p, 2p-15 and 2p+15 all are positive and are primes (hence we omit p=2).
%t A103803 Select[Range[11,2000], PrimeQ[ # ] && PrimeQ[2# + 15] && PrimeQ[2# - 15] &]
%t A103803 Select[Prime[Range[2,250]],And@@PrimeQ[2#+{15,-15}]&] (* _Harvey P. Dale_, May 21 2013 *)
%o A103803 (Magma) [p: p in PrimesUpTo(3200)| IsPrime(2*p+15) and IsPrime(2*p-15) ]; // _Vincenzo Librandi_, Jan 28 2011
%Y A103803 Cf. A103802.
%K A103803 nonn
%O A103803 1,1
%A A103803 _Zak Seidov_, Feb 16 2005