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A362591
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Discriminants D of the positive Pell equation x^2 - D*y^2 = 1, whose fundamental and all higher roots produce abc-triples a+b=c (or 1 + D*y^2 = x^2) with radical R(abc) < c.
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2
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2, 5, 7, 8, 12, 13, 14, 18, 20, 21, 27, 28, 29, 31, 32, 39, 41, 45, 46, 47, 48, 50, 52, 53, 54, 56, 60, 62, 63, 67, 69, 70, 72, 73, 74, 75, 77, 79, 80, 84, 85, 89, 92, 93, 96, 98, 103, 108, 109, 112, 113, 114, 116, 117, 122, 124, 125, 126, 127, 128, 135, 137, 139, 145, 147, 149, 150
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OFFSET
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1,1
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COMMENTS
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These abc-triples are rare situations for triples of additively related pairwise relatively prime positive integers a + b = c, when radical R(abc) < c. Generally R(abc) > c; see Wikipedia.
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LINKS
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CROSSREFS
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Similar sequence for the negative Pell's equation is A362592.
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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