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%I #5 Jul 14 2019 11:55:16
%S 0,1,4,9,15,16,25,27,33,36,37,45,49,51,53,55,57,60,64,75,81,85,95,99,
%T 100,108,121,125,129,132,135,144,148,153,165,169,171,173,180,183,187,
%U 193,196,204,209,212,213,215,220,225,228,229,240,241,243,249,255,256
%N Nonnegative integers of the form x^2+15*x*y-y^2.
%C Discriminant of indefinite binary quadratic form: 229.
%H Will Jagy, <a href="/A243655/a243655.txt">C++ program Conway_Positive_All.cc to find all positive numbers represented by an indefinite binary quadratic form</a>
%H Peter Luschny, <a href="https://oeis.org/wiki/User:Peter_Luschny/BinaryQuadraticForms#Implementation">Binary Quadratic Forms</a>
%H N. J. A. Sloane et al., <a href="https://oeis.org/wiki/Binary_Quadratic_Forms_and_OEIS">Binary Quadratic Forms and OEIS</a> (Index to related sequences, programs, references)
%o (C++) See Jagy link.
%Y Primes in this sequence: A141166.
%K nonn
%O 1,3
%A _Hugo Pfoertner_, Jul 14 2019
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