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 A031340 #22 Sep 08 2022 08:44:50 %S A031340 17,43,73,107,149,181,227,263,307,349,389,433,467,521,571,613,653,701, %T A031340 751,809,853,887,947,997,1039,1091,1129,1193,1237,1291,1327,1423,1453, %U A031340 1493,1553,1601,1637,1699,1753,1811,1873,1931,1993 %N A031340 a(n) = prime(7*n). %H A031340 Jens Kruse Andersen, <a href="/A031340/b031340.txt">Table of n, a(n) for n = 1..10000</a> %p A031340 ithprime(7*n) %t A031340 Prime[7*Range[50]] (* _Harvey P. Dale_, Nov 24 2011 *) %o A031340 (Magma) [NthPrime(7*n): n in [1..50]]; // _Vincenzo Librandi_, Apr 10 2011 %o A031340 (Sage) [nth_prime(7*n) for n in (1..50)] # _Bruno Berselli_, May 07 2014 %o A031340 (PARI) a(n)=prime(7*n) \\ _Edward Jiang_, Sep 08 2014 %Y A031340 Cf. similar sequences listed in A031336. %K A031340 nonn,easy %O A031340 1,1 %A A031340 _Jeff Burch_