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A059675 Numbers n such that n*6^n - 1 is prime. 13

%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

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Last modified May 11 16:51 EDT 2024. Contains 372410 sequences. (Running on oeis4.)