Squaring a string of ones ((1x$_)**2) is very clever! This works for me up to 8, but 9 fails (because 111111111**2 = 1.23456789876543e+16). (Same for toolic's solution below...)

You can save one more character with $" instead of " ".

In reply to Re^2: Diamonds for fun by hbm
in thread Diamonds for fun by perl_nando

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