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 ______    _    _    __   _     _____    _    _   
|      \\ | || | || | || | ||  |  ___|| | \  / || 
|  --  // | || | || | '--' ||  | ||__   |  \/  || 
|  --  \\ | \\_/ || | .--. ||  | ||__   | .  . || 
|______//  \____//  |_|| |_||  |_____|| |_|\/|_|| 
`------`    `---`   `-`  `-`   `-----`  `-`  `-`

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發送短信 : On Pythagorean triples and triangular square numbers