K. Raja Rama Gandhi, D. Narasimha Murty, Generalization of Pythagorean Triplets, Quadruple, BSMaSS Volume 1, The Bulletin of Society for Mathematical Services and Standards (Volume 1)
https://www.scipress.com/BSMaSS.1.40
Abstract:
    The method of computing Pythagorean triples is well known. All though the classical formulas produce all primitive triples, which do not generate all possible triples, specially non-primitive triples. This paper presents a novel approach to produce all likely triples both primitive and non-primitive, Quadruple for any extent.
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