%I #18 Nov 06 2019 12:39:00
%S 25,325,703,2101,2353,4525,11041,14089,20197,29857,29891,39331,49241,
%T 58825,64681,76627,78937,79381,87673,88399,88831,102943,109061,137257,
%U 144901,149171,173951,178709,188191,197633,219781,227767,231793,245281
%N Strong pseudoprimes to base 7.
%H Amiram Eldar, <a href="/A020233/b020233.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..200 from R. J. Mathar)
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/StrongPseudoprime.html">Strong Pseudoprime</a>
%H <a href="/index/Ps#pseudoprimes">Index entries for sequences related to pseudoprimes</a>
%Y Cf. A005938, A001262, A020229, A020230, A020231, A020232.
%K nonn
%O 1,1
%A _David W. Wilson_