From: alainverghote on
Good afternoon,


We might also study equations like
x^2 + y^2 = z^2 + 1


and equalities such as
(4n(n+1))^2+(4n^3+6n^2-1)^2 = (2n(n+1)(2n+1))^2 + 1


Have a look at Tito Piezas site!

Alain