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 A159264 Numbers n such that 379*10^n+9 is a ("Google") probable prime. 1
 3, 6, 8, 9, 37, 44, 67, 111, 157, 289, 1256, 1602, 2410, 2482, 2868, 3824, 3891, 6595, 8984, 9318, 10274, 45858, 59152, 86691 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 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. REFERENCES J. Earls, Mathematical Bliss, Pleroma Publications, 2009, pages 15-17. ASIN: B002ACVZ6O [From Jason Earls, Nov 21 2009] LINKS Table of n, a(n) for n=1..24. Henri & Renaud Lifchitz, PRP Records MATHEMATICA Select[Range[3, 300], PrimeQ[379*10^# + 9] &] (* Arkadiusz Wesolowski, Oct 05 2011 *) PROG (PARI) for( n=0, 9e9, ispseudoprime(379*10^n+9) & print1(n", ")) CROSSREFS A159265 lists the actual primes. Sequence in context: A196370 A005622 A072960 * A329500 A287362 A055073 Adjacent sequences: A159261 A159262 A159263 * A159265 A159266 A159267 KEYWORD nonn AUTHOR M. F. Hasler, Apr 07 2009 EXTENSIONS a(22)-a(24) from Arkadiusz Wesolowski, Oct 15 2011 STATUS approved

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Last modified May 30 01:11 EDT 2023. Contains 363044 sequences. (Running on oeis4.)