Search: id:A052155
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%I A052155
%S A052155 1105,1729,2465,2701,2821,6601,8911,10585,15841,18721,29341,31621,
%T A052155 41041,46657,49141,52633,63973,75361,83333,83665,88561,90751,93961,
%U A052155 101101,104653,107185,115921,126217,162401,172081,176149,188461
%N A052155 Pseudoprimes to both base 2 and base 3, i.e. intersection of A001567 
               and A005935.
%H A052155 R. J. Mathar, <a href="b052155.txt">Table of n, a(n) for n=1..201</a>
%H A052155 J. Bernheiden, <a href="http://www.mathe-schule.de/download/pdf/Primzahl/
               PSP.pdf">Pseudoprimes (Text in German)</a>
%t A052155 Select[ Range[228240], !PrimeQ[ # ] && PowerMod[2, # - 1, # ] == 1 && 
               PowerMod[3, # - 1, # ] == 1 &]
%Y A052155 Cf. A001567, A005935, A083737.
%Y A052155 Sequence in context: A025314 A025287 A025305 this_sequence A097102 A159781 
               A102924
%Y A052155 Adjacent sequences: A052152 A052153 A052154 this_sequence A052156 A052157 
               A052158
%K A052155 nice,nonn
%O A052155 1,1
%A A052155 Harvey P. Dale (hpd1(AT)is2.nyu.edu), Jan 24 2000

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