Sunday 31 December 2017

RT @panlepan: A Pythagorean transition. 2017=44²+9² 2018=43²+13² #HappyNewYear #HappyNewYear2018 https://t.co/IhiaJ6bXUZ https://t.co/td7NuYORFu - The Calculator Guide from Twitter


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December 31, 2017 at 06:28PM
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