[seqfan] Re: can all of these be square? a^2+b^2, a^2+c^2, b^2+c^2, a^2+b^2+c^2
Eric Rowland
rowland at lacim.ca
Mon Feb 1 21:19:11 CET 2016
The solutions you are looking for are called perfect cuboids. It's an open
question whether any exist:
https://en.wikipedia.org/wiki/Euler_brick#Perfect_cuboid
http://oeis.org/A141029
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