15th Day of Year: 15.01.19

References: I.J. TANEJA, Generating Pythagorean Triples, Patterns, and Magic Squares, RGMIA Research Report Collection, \textbf{21}(2018), Art. 101, pp.1-121. https://inderjtaneja.com/2018/11/16/crazy-representations-of-natural-numbers-the-10958-problem/