13th Day of Year: 13.01.19

References: I.J. TANEJA, Palindromic-Type Squared Expressions with Palindromic and Non-Palindromic Sum, RGMIA Research Report Collection, 21(2018), Art. 62, pp. 1-117 . https://inderjtaneja.com/2019/01/01/single-letter-representations-of-numbers-from-1-to-20000/