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A213983
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Smallest integer x >= 0 satisfying x^2 - y^2 = n^3.
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0
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0, 1, 3, 6, 8, 15, 15, 28, 24, 27, 35, 66, 42, 91, 63, 60, 64, 153, 81, 190, 90, 105, 143, 276, 118, 125, 195, 162, 154, 435, 165, 496, 192, 209, 323, 210, 216, 703, 399, 260, 253, 861, 273, 946, 297, 309, 575, 1128, 336, 343, 375, 374, 377, 1431, 405, 440
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OFFSET
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0,3
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COMMENTS
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33 is the smallest odd number with the property that n does not divide a(n).
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LINKS
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MATHEMATICA
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lst = {}; Do[y = 0; While[True, s = Last@Last@Reduce[x^2 - y^2 == n^3, x]; If[IntegerQ[s], Break[]]; y++]; AppendTo[lst, s], {n, 55}]; Prepend[lst, 0]
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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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