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 A253925 #15 Sep 26 2015 22:41:41 %S A253925 127,1009,1709,2087,2393,2969,3221,3347,7309,7757,7883,10529,11411, %T A253925 12923,17569,18269,21799,23311,23633,24877,25703,26839,27091,29429, %U A253925 35461,35603,38431,39367,39761,41887,42967,43037,45361,45989,47699,52163,59093,63629,65323,67103,68041,69481,70937,74843,77813,77867 %N A253925 Primes p such that both (p^2 + 5)/6 and (p^4 + 5)/6 are prime. %C A253925 Intersection of A118915 and A247478. %H A253925 Charles R Greathouse IV, <a href="/A253925/b253925.txt">Table of n, a(n) for n = 1..10000</a> %e A253925 a(1)=127=A118915(9)=A247478(9). a(2)=1009=A118915(45)=A247478(22). %o A253925 (PARI) forprime(p=5,1e6,if(isprime((p^2+5)/6) && isprime((p^4+5)/6), print1(p", "))) \\ _Charles R Greathouse IV_, Jan 19 2015 %Y A253925 Cf. A118915, A247478. %K A253925 nonn %O A253925 1,1 %A A253925 _Zak Seidov_, Jan 19 2015