%I #11 Aug 06 2015 06:21:11
%S 451,529,1247,1541,1765,1807,1991,7421,9773,11041,12167,13333,14491,
%T 14981,17611,18721,23521,27511,31417,35443,65305,65641,68101,74089,
%U 79003,81631,96727,102719,104653,105271,109061,128143,130561,145351,161101
%N Strong pseudoprimes to base 42.
%H R. J. Mathar, <a href="/A020268/b020268.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_