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 A074834 #5 May 23 2021 02:50:06 %S A074834 2,3,5,7,13,17,23,29,31,53,59,61,67,73,79,83,89,97,101,107,193,197, %T A074834 199,211,233,239,241,251,257,269,277,281,293,311,313,337,353,367,373, %U A074834 383,397,401,409,419,433,443,449,457,461,467,487,491,499,509,787,797,809 %N A074834 Primes whose base 4 reversal is also prime. %H A074834 Amiram Eldar, <a href="/A074834/b074834.txt">Table of n, a(n) for n = 1..10000</a> %t A074834 Prime[ Select[ Range[140], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ Prime[ # ], 4]], 4]] &]] %Y A074834 Cf. A007500, A074832, A074833, A075235, A075236, A075237, A075238, A075239. %K A074834 base,easy,nonn %O A074834 1,1 %A A074834 _Robert G. Wilson v_, Sep 09 2002