%I A062568
%S A062568 2047,15841,104653,1004653,10323769,100463443,1002261781,10000321321,
%T A062568 100004790097,1000002977551,10000130243671,100002236680837,
%U A062568 1000003918690669
%N A062568 Smallest n-digit strong pseudoprimes (in base 2).
%H A062568 Patrick De Geest, <a href="http://www.worldofnumbers.com/won125.htm">
               Smallest n-digit pseudoprimes (base 2)</a>
%e A062568 a(1)=2047 because 2047 is the smallest strong pseudoprime of 4 digit 
               length.
%Y A062568 Cf. A001567, A068216, A067845, A001262, A062852.
%Y A062568 Sequence in context: A038462 A001262 A141232 this_sequence A075954 A011561 
               A038998
%Y A062568 Adjacent sequences: A062565 A062566 A062567 this_sequence A062569 A062570 
               A062571
%K A062568 hard,more,base,nonn,new
%O A062568 4,1
%A A062568 Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 13 2002
%E A062568 Edited by Charles R Greathouse IV (charles.greathouse(AT)case.edu), Nov 
               01 2009