%I #11 Aug 06 2015 07:52:34
%S 25,175,1247,1681,2059,2653,3053,5461,8365,9475,11041,12209,13427,
%T 13747,18103,19909,22177,29891,31621,32477,32873,33163,33661,42811,
%U 44065,52111,53467,58801,61075,66325,68251,68953,79381,88537,93961,96049,96727
%N Strong pseudoprimes to base 51.
%H R. J. Mathar, <a href="/A020277/b020277.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_