%I A003653 M3781
%S A003653 5,8,13,17,29,37,40,41,53,61,65,73,85,89,97,101,104,109,113,137,145,149,
%T A003653 157,173,181,185,193,197,229,232,233,241,257,265,269,277,281,293,296,
%U A003653 313,317,328,337,349,353,365,373,389,397,401,409,421,424,433,445,449
%N A003653 Discriminants of quadratic fields whose fundamental unit has norm -1.
%D A003653 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A003653 D. A. Buell, Binary Quadratic Forms. Springer-Verlag, NY, 1989, pp. 224-241.
%Y A003653 Sequence in context: A140488 A058240 A097268 this_sequence A003655 A082823 
               A143747
%Y A003653 Adjacent sequences: A003650 A003651 A003652 this_sequence A003654 A003655 
               A003656
%K A003653 nonn
%O A003653 1,1
%A A003653 N. J. A. Sloane (njas(AT)research.att.com), Mira Bernstein