91st Day of Year – 01.04.2021: Pythagorean Triples Patterns and Semi-Selfie Expressions

References: Inder J. Taneja, Colored Patterns With 2021 On a Board of 9×9,  https://inderjtaneja.com/2020/12/26/colored-pattern-with-2021-on-a-board-of-9×9/ Inder J. Taneja, Crazy Representations of Natural Numbers – The 10958 Problem,  https://inderjtaneja.com/2018/11/16/crazy-representations-of-natural-numbers-the-10958-problem/ Inder J. Taneja, Factorial-Type Numerical Calender 2021, Zenodo, December 16, 2020, pp. 1-31,  http://doi.org/10.5281/zenodo.4329889 Inder J. Taneja, Selfie Fractions: Addable, Subtractable, Dottable and Potentiable, Zenodo, March 24, […]