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 A061741 #15 Feb 01 2016 02:54:34 %S A061741 166031,264961,325249,388081,450071,462841,543601,735271,816649, %T A061741 823201,915049,1063561,1155151,1414081,1415929,1554169,1704271, %U A061741 1884121,1952449,2181271,2215921,2290831,2477521,2499421,2514961,2585647,2633689 %N A061741 Primes with 39 as smallest positive primitive root. %H A061741 Vincenzo Librandi, <a href="/A061741/b061741.txt">Table of n, a(n) for n = 1..660</a> %t A061741 Select[ Prime@Range@221000, PrimitiveRoot@# == 39 &] (* _Robert G. Wilson v_, May 11 2001 *) %o A061741 (PARI) is(n)=if(n<9||!isprime(n), return(0)); for(k=2,38,if(znorder(Mod(k,n))==n-1, return(0))); znorder(Mod(39,n))==n-1 \\ _Charles R Greathouse IV_, Apr 28 2015 %Y A061741 Cf. A001918, A019364, A001122-A001126, A061323-A061335, A061730-A061741, A114657-A114686. %K A061741 nonn %O A061741 1,1 %A A061741 _Klaus Brockhaus_, May 06 2001 %E A061741 More terms from _Robert G. Wilson v_, May 11 2001 and Dec 21 2005