%I #10 May 22 2017 11:43:48
%S 1,2,3,19,20,24,34,77,107,114,122,165,530,1999,4359,11842,12059,13802,
%T 22855,41679,58185,145359,249987
%N Numbers n such that n*6^n - 1 is prime.
%H Steven Harvey, <a href="http://harvey563.tripod.com/GeneralizedWoodallPrimes.txt">Generalized Woodall Search</a>
%t Do[ If[ PrimeQ[ n*6^n - 1 ], Print[ n ] ], {n, 1, 3500} ]
%o (PARI) is(n)=ispseudoprime(n*6^n-1) \\ _Charles R Greathouse IV_, May 22 2017
%K nonn
%O 1,2
%A _Robert G. Wilson v_, Feb 05 2001
%E More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 05 2008
%E a(22)-a(23) from Harvey link by _Ray Chandler_, Apr 10 2016