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 A102338 #24 Feb 03 2024 00:49:53 %S A102338 0,1,2,4,5,7,8,10,11,16,17,19,22,23,26,28,29,31,35,37,38,43,44,46,50, %T A102338 52,56,59,61,64,65,67,68,73,74,77,82,85,86,88,95,98,101,103,106,109, %U A102338 110,112,115,116,119,121,122,128,130,137,142,143,145,148,149,152,154,155 %N A102338 Numbers k such that 10k+3 is prime. %H A102338 Daniel Starodubtsev, <a href="/A102338/b102338.txt">Table of n, a(n) for n = 1..10000</a> %e A102338 For n=1, 10k+3 = 13 (prime). %e A102338 For n=26, 10k+3 = 263 (prime). %e A102338 For n=50, 10k+3 = 503 (prime). %t A102338 Select[Range[0, 160], PrimeQ[10# + 3] &] (* _Ray Chandler_, Nov 07 2006 *) %o A102338 (Magma) [n: n in [0..1000]| IsPrime(10*n+3)]; // _Vincenzo Librandi_, Apr 06 2011 %o A102338 (PARI) isok(n) = isprime(10*n+3); \\ _Michel Marcus_, Sep 08 2016 %Y A102338 Cf. A023238 (subsequence of primes), A030431, A049508. %K A102338 nonn %O A102338 1,3 %A A102338 _Parthasarathy Nambi_, Feb 20 2005 %E A102338 Edited and extended by _Ray Chandler_, Nov 07 2006