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Strong pseudoprimes to base 15.
1

%I #11 Aug 04 2015 06:09:51

%S 1687,3277,6541,14041,14701,15409,25313,31021,47461,49241,50401,54241,

%T 58969,60691,82733,88831,97921,112141,115669,156311,181901,186497,

%U 191959,194221,219781,227767,293281,294079,323041,416641,432821,470851,514447

%N Strong pseudoprimes to base 15.

%H R. J. Mathar, <a href="/A020241/b020241.txt">Table of n, a(n) for n = 1..216</a>

%H <a href="/index/Ps#pseudoprimes">Index entries for sequences related to pseudoprimes</a>

%K nonn

%O 1,1

%A _David W. Wilson_