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A346594
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Numbers k such that (65*k)^2 can be represented in exactly 4 ways as the sum of a positive square and a positive fourth power.
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2
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7225, 28900, 34225, 65025, 115600, 136900, 180625, 235225, 260100, 308025, 354025, 395641, 462400, 547600, 585225, 722500, 835635, 855625, 874225, 940900, 1040400, 1221025, 1232100, 1416100, 1422798, 1582564, 1625625, 1677025, 1849600, 2088025, 2117025, 2190400
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OFFSET
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1,1
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COMMENTS
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All terms multiplied by 65 are in A346110. It is unknown whether A346110 contains terms not of this form.
A346110(44,46,53,95,97) are not divisible by 65 (5*13), but these few terms are all divisible by 145 (5*29). For further information about divisibility, see the links to A346110 below. (End)
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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