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%I #10 May 22 2017 11:43:44
%S 8,14,42,384,564,4256,6368,21132,27180,96584,349656,545082
%N Numbers n such that n*5^n - 1 is prime.
%H Steven Harvey, <a href="http://harvey563.tripod.com/GeneralizedWoodallPrimes.txt">Generalized Woodall Search</a>
%t Do[ If[ PrimeQ[ n*5^n - 1 ], Print[ n ]], {n, 1, 4000} ]
%o (PARI) is(n)=ispseudoprime(n*5^n-1) \\ _Charles R Greathouse IV_, May 22 2017
%K nonn
%O 1,1
%A _Robert G. Wilson v_, Feb 05 2001
%E More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 05 2008
%E a(11)-a(12) from Harvey link by _Ray Chandler_, Apr 10 2016
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