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 A102624 #21 Sep 08 2022 08:45:16 %S A102624 0,2,5,8,11,12,14,15,17,18,24,30,33,36,38,39,44,45,47,50,53,56,59,63, %T A102624 68,75,77,78,81,84,86,89,93,96,99,102,107,114,119,123,128,129,135,137, %U A102624 143,144,147,149,158,159,162,168,171,176,179,182,185,194,200,201,203,210 %N A102624 Numbers k such that the number k23 is prime. %H A102624 Harvey P. Dale, <a href="/A102624/b102624.txt">Table of n, a(n) for n = 1..1000</a> %e A102624 If k=2, then k23 = 223 (prime). %e A102624 If k=45, then k23 = 4523 (prime). %e A102624 If k=99, then k23 = 9923 (prime). %t A102624 Select[Range[0,300],PrimeQ[100#+23]&] (* _Harvey P. Dale_, Apr 08 2019 *) %o A102624 (Magma) [ n: n in [1..700] | IsPrime(Seqint([3,2] cat Intseq(n))) ]; // _Vincenzo Librandi_, Feb 04 2011; misses the zero %o A102624 (PARI) is(n)=isprime(100*n+23) \\ _Charles R Greathouse IV_, Jun 06 2017 %Y A102624 Cf. A103401, A103408, A103118. %K A102624 nonn,base %O A102624 1,2 %A A102624 _Parthasarathy Nambi_, Jan 31 2005 %E A102624 More terms from _Robert G. Wilson v_, Feb 04 2005