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 A261438 #13 Mar 20 2016 13:09:59 %S A261438 2,5,11,37,53,89,83,347,269,563,467,1187,1907,4007,1559,8363,7727, %T A261438 6803,20327,45119,10559,35279,116639,68903,136223,217367,38639,416387, %U A261438 250799,616103,1308863,998423,661049,4201073,618719,1815707,4446119,20227133,701399 %N A261438 a(n) is the smallest prime having exactly n consecutive primitive roots. %C A261438 Sequence is not monotonic. %C A261438 a(49) = 71369489, a(51) = 17635679, a(57) = 48796439 and a(59) = 75720089. %C A261438 a(48) > 10^8. - _Hiroaki Yamanouchi_, Aug 22 2015 %H A261438 Hiroaki Yamanouchi, <a href="/A261438/b261438.txt">Table of n, a(n) for n = 1..47</a> %Y A261438 Cf. A261388. %Y A261438 See A268397 for another version. %K A261438 nonn %O A261438 1,1 %A A261438 _Joerg Arndt_, Aug 18 2015 %E A261438 a(23)-a(39) from _Hiroaki Yamanouchi_, Aug 22 2015