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 A274505 #19 Sep 08 2022 08:46:17 %S A274505 7,11,17,19,23,31,47,61,67,89,101,107,109,137,151,163,199,283,347,353, %T A274505 373,397,401,409,431,439,457,479,487,523,577,607,619,641,647,661,691, %U A274505 761,787,809,907,929,1033,1087,1103,1153,1201,1229,1307,1319 %N A274505 Primes p such that 3*p-10 and 3*p+10 are prime numbers. %C A274505 Intersection of A023211 and A230227. %H A274505 Vincenzo Librandi, <a href="/A274505/b274505.txt">Table of n, a(n) for n = 1..1000</a> %e A274505 7 is a term because 3*7-10 = 11 and 3*7+10 = 31 are primes. %t A274505 Select[Prime[Range[400]], PrimeQ[3 # - 10] && PrimeQ[3 # + 10] &] %o A274505 (Magma) [p: p in PrimesUpTo(1500) |IsPrime(3*p-10) and IsPrime(3*p+10)]; %Y A274505 Cf. A023211, A164568, A230227. %K A274505 nonn,easy %O A274505 1,1 %A A274505 _Vincenzo Librandi_, Jun 30 2016