Hi again,

I'm sure all the experienced users have come across this

$\displaystyle a^2+b^2=c^2$

$\displaystyle let\ \ \ a=m^2-n^2$

$\displaystyle and\ \ \ b=2mn$

$\displaystyle then\ \ \ c=m^2+n^2$

so that you can choose any integers for m and n to get valid numbers for a, b & c.

Has anyone come across anything similar for

$\displaystyle a^2+b^2=2c^2$

Thanks

Pro