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 A235150 #9 Sep 08 2022 08:46:06 %S A235150 2,23,29,41,43,47,83,89,223,239,241,257,269,271,281,293,401,443,449, %T A235150 461,463,467,479,811,821,823,829,839,853,859,877,881,883,887,2003, %U A235150 2027,2039,2053,2081,2089,2113,2129,2131,2137,2161,2179,2221,2237,2251,2269,2281 %N A235150 Primes p such that (p reversed) + 9 is also a prime. %H A235150 Vincenzo Librandi, <a href="/A235150/b235150.txt">Table of n, a(n) for n = 1..1000</a> %e A235150 83 is in the sequence because 38+9=47 is prime. %t A235150 Select[Prime[Range[4000]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] + 9]&] %o A235150 (Magma) [p: p in PrimesUpTo(4000) | IsPrime(q+9) where q is Seqint(Reverse(Intseq(p)))]; %Y A235150 Cf. A165446, A166501, A167460, A167466, A167473. %K A235150 nonn,base %O A235150 1,1 %A A235150 _Vincenzo Librandi_, Jan 04 2014