14th Day of Year: 14.01.19

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/2019/01/01/single-letter-representations-of-numbers-from-1-to-20000/