Saturday, December 4, 2010

Numbers that can be expressed as sum of squares in two different ways

The smallest numbers that can be expressed as the sum of two (nonzero) perfect squares in two different ways :

50 = 5^2 + 5^2 = 1^2 + 7^2

65 = 1^2 + 8^2 = 4^2 + 7^2

What's next?

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