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a(n) is the smallest prime having exactly n consecutive primitive roots.
3

%I #13 Mar 20 2016 13:09:59

%S 2,5,11,37,53,89,83,347,269,563,467,1187,1907,4007,1559,8363,7727,

%T 6803,20327,45119,10559,35279,116639,68903,136223,217367,38639,416387,

%U 250799,616103,1308863,998423,661049,4201073,618719,1815707,4446119,20227133,701399

%N a(n) is the smallest prime having exactly n consecutive primitive roots.

%C Sequence is not monotonic.

%C a(49) = 71369489, a(51) = 17635679, a(57) = 48796439 and a(59) = 75720089.

%C a(48) > 10^8. - _Hiroaki Yamanouchi_, Aug 22 2015

%H Hiroaki Yamanouchi, <a href="/A261438/b261438.txt">Table of n, a(n) for n = 1..47</a>

%Y Cf. A261388.

%Y See A268397 for another version.

%K nonn

%O 1,1

%A _Joerg Arndt_, Aug 18 2015

%E a(23)-a(39) from _Hiroaki Yamanouchi_, Aug 22 2015