# Carnival of Mathematics #209

Welcome to the 209th Carnival of Mathematics! 209 has a few distinctions, including being the smallest number with 6 representations as a sum of 3 positive squares: \begin{aligned}209 &= 1^2 + 8^2 + 12^2 \\ &= 2^2 + 3^2 + 14^2 \\ &= 2^2 + 6^2 + 13^2 \\ &= 3^2 + 10^2 + 10^2 […]...