%I A020230
%S A020230 341,1387,2047,3277,4033,4371,4681,5461,8321,8911,10261,13747,14491,
%T A020230 15709,15841,19951,29341,31621,42799,49141,49981,52633,60787,65077,65281,
%U A020230 74665,80581,83333,85489,88357,90751,104653,123251,129921,130561,137149
%N A020230 Strong pseudoprimes to base 4.
%H A020230 <a href="Sindx_Ps.html#pseudoprimes">Index entries for sequences related 
               to pseudoprimes</a>
%H A020230 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               StrongPseudoprime.html">Strong Pseudoprime</a>
%Y A020230 Sequence in context: A038473 A050217 A086837 this_sequence A087716 A084653 
               A143688
%Y A020230 Adjacent sequences: A020227 A020228 A020229 this_sequence A020231 A020232 
               A020233
%K A020230 nonn
%O A020230 1,1
%A A020230 David W. Wilson (davidwwilson(AT)comcast.net)