It is well known that 4n(n+1) + 1 is a square if n is an integer but if n is a Gaussian integer i.e., 4n(n+1) + 1 = A + Bi, then the norm (A^2 + B^2) is always a square! The proof is quite easy since A = u^2 - v^2 and B = 2uv.(adsbygoogle = window.adsbygoogle || []).push({});

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# Gaussian Integers and Pythagorean Triplets

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