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 A075238 #11 May 23 2021 02:50:38 %S A075238 2,3,5,7,13,29,31,41,43,47,59,61,67,71,73,79,89,97,101,107,113,193, %T A075238 211,227,233,239,251,349,353,373,383,449,457,463,479,487,491,503,509, %U A075238 521,523,541,577,587,643,677,683,719,733,751,757,773,787,811,823,827,829 %N A075238 Primes whose base 8 reversal is also prime. %H A075238 Amiram Eldar, <a href="/A075238/b075238.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..1000 from Harvey P. Dale) %t A075238 Prime[ Select[ Range[150], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ Prime[ # ], 8]], 8]] &]] %t A075238 Select[Prime[Range[200]],PrimeQ[IntegerReverse[#,8]]&] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Jun 09 2017 *) %Y A075238 Cf. A007500, A074832, A074833, A074834, A075235, A075236, A075237, A075239. %K A075238 base,easy,nonn %O A075238 1,1 %A A075238 _Robert G. Wilson v_, Sep 09 2002