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Forza T U S
4 => 4² = 16 => 1² + 6² = 37 => 3² + 7² = 58 => 5² + 8² = 89 => 8² + 9² = 145 => 1² + 4² + 5² = 42 => 4² + 2² = 20 => 2² + 0² = 4