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 A213078 #11 Sep 08 2022 08:46:02 %S A213078 199,311,379,409,419,659,941,1009,1439,2351,2789,3079,3221,4421,4999, %T A213078 5351,5531,5839,6299,7129,7321,7349,8819,9029,10091,10151,10391,10459, %U A213078 11131,11551,12251,12391,13049,13759,14281,14669,15091,15329,15581,16381,16811 %N A213078 Primes p such that 2p^2-1 and 3p^2-2 are also prime. %C A213078 Subsequence of A106483: a(1)=A106483(19), a(2)=A106483(25), %C A213078 a(3)=A106483(28). %H A213078 Vincenzo Librandi, <a href="/A213078/b213078.txt">Table of n, a(n) for n = 1..1000</a> %t A213078 Select[Prime[Range[2000]], PrimeQ[2 #^2 - 1] && PrimeQ[3 #^2 - 2] &] (* _T. D. Noe_, Jun 06 2012 *) %o A213078 (Magma) [p: p in PrimesUpTo(17000) | IsPrime(2*p^2-1)and IsPrime(3*p^2-2)]; // _Vincenzo Librandi_, Apr 08 2013 %Y A213078 Cf. A106483. %K A213078 nonn,easy %O A213078 1,1 %A A213078 _Zak Seidov_, Jun 04 2012