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A188948
Values of x such that x^2 + y^2 = 13^n with x and y coprime and 0 < x < y.
11
0, 2, 5, 9, 119, 122, 828, 4449, 239, 56403, 145668, 246046, 3369960, 3627003, 23161315, 128629846, 13651680, 1590277918, 4241902555, 6712571031, 95420159401, 107655263398, 647549275812, 3718150825791, 584824319281, 44827014819597, 123471611274972, 182714776311554, 2701419604443960, 3190610873034597, 18094618450123325
OFFSET
0,2
COMMENTS
The y values are in A188949.
LINKS
Chris Busenhart, Lorenz Halbeisen, Norbert Hungerbühler, Oliver Riesen, On primitive solutions of the Diophantine equation x^2+ y^2= M, Eidgenössische Technische Hochschule (ETH Zürich, Switzerland, 2020).
MATHEMATICA
Table[Select[PowersRepresentations[13^n, 2, 2], CoprimeQ @@ # &][[1, 1]], {n, 0, 30}]
CROSSREFS
Sequence in context: A185160 A289942 A239899 * A334295 A083460 A172411
KEYWORD
nonn
AUTHOR
Zak Seidov, Apr 10 2011
EXTENSIONS
Edited by T. D. Noe, Apr 14 2011
STATUS
approved