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%I #15 Nov 08 2021 09:59:10
%S 3,6,8,9,37,44,67,111,157,289,1256,1602,2410,2482,2868,3824,3891,6595,
%T 8984,9318,10274,45858,59152,86691
%N Numbers n such that 379*10^n+9 is a ("Google") probable prime.
%C The prime number 379009 rotated by 180 degree reads "GOOGLE". This sequence gives n such that "GO...OGLE" with n-1 O's is prime.
%D J. Earls, Mathematical Bliss, Pleroma Publications, 2009, pages 15-17. ASIN: B002ACVZ6O [From _Jason Earls_, Nov 21 2009]
%H Henri & Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=379*10^n%2B9&action=Search">PRP Records</a>
%t Select[Range[3, 300], PrimeQ[379*10^# + 9] &] (* _Arkadiusz Wesolowski_, Oct 05 2011 *)
%o (PARI) for( n=0,9e9, ispseudoprime(379*10^n+9) & print1(n","))
%Y A159265 lists the actual primes.
%K nonn
%O 1,1
%A _M. F. Hasler_, Apr 07 2009
%E a(22)-a(24) from _Arkadiusz Wesolowski_, Oct 15 2011
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