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 A106068 #17 Sep 08 2022 08:45:17 %S A106068 5,11,19,31,41,59,89,109,151,179,181,229,241,331,349,389,439,509,521, %T A106068 599,661,719,769,839,881,929,1019,1039,1129,1229,1291,1409,1451,1481, %U A106068 1549,1669,1741,1759,1801,1811,2111,2131,2539,2621,2671,2699,2819,2879 %N A106068 Primes p such that 3p + 4 and 4p + 3 are primes. %C A106068 Prime terms in A124855. %H A106068 Marius A. Burtea, <a href="/A106068/b106068.txt">Table of n, a(n) for n = 1..534</a> %t A106068 Select[Prime[Range[450]], PrimeQ[4#+3]&&PrimeQ[3#+4]&] %o A106068 (Magma) [p: p in PrimesUpTo(5000)|IsPrime(3*p+4) and IsPrime(4*p+3)] // _Vincenzo Librandi_, Jan 30 2011 %o A106068 (PARI) isok(p) = isprime(p) && isprime(3*p+4) && isprime(4*p+3); \\ _Michel Marcus_, Oct 12 2018 %Y A106068 Cf. A034936, A095278, A124855. %K A106068 nonn %O A106068 1,1 %A A106068 _Zak Seidov_, May 07 2005 %E A106068 Extended by _Ray Chandler_, Mar 14 2007