%I A031589
%S A031589 8283,8287,8291,8311,8331,8351,8363,8371,8387,8403,8419,8423,8431,8443,
%T A031589 8447,8459,8467,8483,8519,8523,8527,8531,8539,8543,8551,8563,8599,8623,
%U A031589 8627,8647,33128,33160,33184,33256,33280,33408,33416,33448,33472,33504
%N A031589 Numbers n such that continued fraction for sqrt(n) has even period and 
               central term 91.
%Y A031589 Sequence in context: A145527 A054215 A031679 this_sequence A031769 A062852 
               A124414
%Y A031589 Adjacent sequences: A031586 A031587 A031588 this_sequence A031590 A031591 
               A031592
%K A031589 nonn
%O A031589 1,1
%A A031589 David W. Wilson (davidwwilson(AT)comcast.net)