Here are the first few solutions:

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Here are the first few solutions:

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These two are interesting using x^2 – n y^2 = 1

9801^2 – 725 * 364^2 = 1.

458^2 – 209763 *1^2 = 1

x, y and n are 0 – 9 pan digital.

and this one

30769208^2 – 5651487*12943^2 = 1

is 2 lots of 0 – 9 digits for x, y, and n

Paul.

Yes, indeed. That’s very cool!