%I #11 Aug 04 2015 13:12:33
%S 9,15,45,169,1035,1441,2611,2977,3961,4187,5461,6697,7107,7601,7711,
%T 11521,12403,21073,22177,23377,29341,33001,38701,49609,49771,50737,
%U 51493,59977,75241,80941,90521,90751,91831,97921,98881,106159,112897,121301
%N Strong pseudoprimes to base 89.
%H R. J. Mathar, <a href="/A020315/b020315.txt">Table of n, a(n) for n = 1..200</a>
%H <a href="/index/Ps#pseudoprimes">Index entries for sequences related to pseudoprimes</a>
%K nonn
%O 1,1
%A _David W. Wilson_