References: Inder J. Taneja, Single Digit Representations of Natural Numbers From 1 to 5000, Zenodo, , January 14, 2019, https://doi.org/10.5281/zenodo.2538893.Inder J. Taneja, Single Digit Representations of Natural Numbers From 5001 to 10000, Zenodo, January 14, 2019, https://doi.org/10.5281/zenodo.2538897.Inder J. Taneja, Single Digit Representations of Numbers From 10001 to 15000, Zenodo, January, 26, 2019, pp. 1-510, https://doi.org/10.5281/zenodo.2550414.Inder J. Taneja, Single Digit Representations of … Continue reading 81st Day of Year: 22.03.22 – Sigle Digit, Single Letter and Amicable-Type Representations