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A230743
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Values of x such that x^2 + y^2 = 41^n with x and y coprime and 0 < x < y.
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5
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4, 9, 115, 720, 2476, 42471, 4765, 1788961, 3780956, 51872200, 310486445, 1142532559, 18483128564, 4205436520, 799862636324, 1584162310079, 23384002313285, 133802323596440, 526151093402156, 8041209044472401, 2783579583540395, 357525366658772391
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OFFSET
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1,1
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COMMENTS
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The corresponding y-values are in A230744.
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LINKS
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EXAMPLE
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a(3)=115 because 115^2+236^2=68921=41^3.
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MATHEMATICA
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Table[Select[PowersRepresentations[41^n, 2, 2], CoprimeQ@@#&][[1, 1]], {n, 1, 40}] (* Vincenzo Librandi, Mar 02 2014 *)
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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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