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Strong pseudoprimes to base 69.
1

%I #11 Aug 06 2015 10:55:43

%S 35,91,133,247,361,1387,1729,2527,3605,4693,5713,6161,6643,8911,10349,

%T 18721,20591,26281,26353,32851,33355,38503,40501,49729,51961,52633,

%U 54913,57421,64907,69049,82513,83981,97661,98159,111055,113653,115231,118301

%N Strong pseudoprimes to base 69.

%H R. J. Mathar, <a href="/A020295/b020295.txt">Table of n, a(n) for n = 1..300</a>

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

%K nonn

%O 1,1

%A _David W. Wilson_