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Strong pseudoprimes to base 90.
1

%I #11 Aug 07 2015 03:46:32

%S 91,1001,1729,2413,6281,8321,8401,11557,13333,14701,19951,24641,36661,

%T 40501,47611,48241,51961,56077,58969,60701,61579,68251,68401,78409,

%U 79003,87673,97921,104143,113641,128143,130561,144841,145351,148417,152209

%N Strong pseudoprimes to base 90.

%H R. J. Mathar, <a href="/A020316/b020316.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_