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 A090725 #13 Mar 05 2016 04:28:31 %S A090725 2,3,5,7,17,19,23,37,41,53,67,71,73,83,89,97,101,103,113,131,137,149, %T A090725 151,257,263,277,281,293,307,311,313,337,353,359,373,389,401,409,521, %U A090725 547,563,569,577,593,599,601,613,617,631,641,643,647,659,661,769,773 %N A090725 Primes whose representation in base 16 has no alphabetic characters. %C A090725 Subsequence of primes of A102489. - _Michel Marcus_, Mar 05 2016 %H A090725 Zak Seidov, <a href="/A090725/b090725.txt">Table of n, a(n) for n = 1..1000</a> %t A090725 Select[Prime[Range[400]], Max[IntegerDigits[#, 16]] < 10 & ] (* _Zak Seidov_, Mar 04 2016 *) %o A090725 (PARI) isok(n) = isprime(n) && (vecmax(digits(n, 16)) < 10); \\ _Michel Marcus_, Mar 05 2016 %Y A090725 Cf. A102489. %K A090725 base,nonn %O A090725 1,1 %A A090725 _Cino Hilliard_, Jan 18 2004 %E A090725 Better definition from _Omar E. Pol_, Dec 24 2008