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 A271347 #13 Sep 16 2024 19:25:05 %S A271347 3,5,23,29,41,59,71,89,101,113,173,191,233,239,269,293,311,359,383, %T A271347 401,419,449,461,503,509,563,569,593,653,701,719,773,821,839,881,929, %U A271347 953,971,983,1013,1031,1049,1091,1163,1193,1259,1283,1289 %N A271347 Primes p such that p + 38 is also prime. %C A271347 A134118 is a subsequence of this sequence. %H A271347 Karl V. Keller, Jr., <a href="/A271347/b271347.txt">Table of n, a(n) for n = 1..10000</a> %e A271347 3 such that 3 + 38 = 41 is also prime. %e A271347 5 such that 5 + 38 = 43 is also prime. %t A271347 Select[Prime[Range[250]], PrimeQ[# + 38] &] (* _Alonso del Arte_, Apr 05 2016 *) %o A271347 (Python) %o A271347 from sympy import isprime %o A271347 for i in range(3, 2001,2): %o A271347 if isprime(i) and isprime(i+38): print (i,end=', ') %o A271347 (PARI) lista(nn) = forprime(p=2, nn, if(ispseudoprime(p+38), print1(p, ", "))); \\ _Altug Alkan_, Apr 05 2016 %Y A271347 Cf. A000040, A134118. %K A271347 nonn %O A271347 1,1 %A A271347 _Karl V. Keller, Jr._, Apr 04 2016