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| Four integers (Posted on 2016-12-04) |
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Find four distinct positive integers such that:
a. Each of them is below 500.
b. Multiplying any two of them and then incrementing the product by 1
produces a square number.
extending the limit to 1700 (spoiler)
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 | Comment 2 of 8 | 
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(In reply to computer solution (spoiler) by Charlie)
1 3 8 120 1 3 120 1680 1 8 15 528 1 15 24 1520 2 4 12 420 3 5 16 1008
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Posted by Charlie
on 2016-12-04 11:05:42 |
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