References: Inder J. Taneja. Fixed Digits Repetitions Prime Patterns of Length 6, Zenodo, February 9, 2019, pp. 1-303, http://doi.org/10.5281/zenodo.2561096 Inder J. Taneja. Fraction-Type Single Letter Representations of Natural Numbers From 1 to 11111, Zenodo, February 4, 2019, http://doi.org/10.5281/zenodo.2556902, pp. 1-203.

References: Inder J. Taneja. Palindromic-Type Pandigital Patterns in Pythagorean Triples, Zenodo, January 20, 2019, pp. 1-160, http://doi.org/10.5281/zenodo.2544551; Inder J. Taneja. Fraction-Type Single Letter Representations of Natural Numbers From 1 to 11111, Zenodo, February 4, 2019, pp. 1-203, http://doi.org/10.5281/zenodo.2556902.