OFFSET
1,3
COMMENTS
Discriminant 205.
LINKS
Will Jagy, Sample output from Conway_Positive_All.cc
Peter Luschny, Binary Quadratic Forms, GitHub 2024.
N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)
PROG
(C++) // Jagy's program, see link.
// Conway_Positive_All 1 13 -9 500
(SageMath)
load('https://raw.githubusercontent.com/PeterLuschny/BinaryQuadraticForms/main/BinaryQF.sage')
Q = binaryQF([1, 13, -9])
print(Q.represented_positives(360, 'all')) # '0' is missing as indicated by the function name. # Peter Luschny, May 04 2024
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 17 2014
STATUS
approved