Three Days With Upside-Down Digits: 0, 1, 6 and 9

References I.J. Taneja, Palindromic, Patterned Magic Sums, Composite, and Colored Patterns in Magic Squares. Zenodo, February 2, 2019, pp. 1-99, http://doi.org/10.5281/zenodo.2555741http://doi.org/10.5281/zenodo.2555741.

161st Day of Year: 10.06.19

References I.J. Taneja, Palindromic, Patterned Magic Sums, Composite, and Colored Patterns in Magic Squares. Zenodo, February 2, 2019, pp. 1-99, http://doi.org/10.5281/zenodo.2555741http://doi.org/10.5281/zenodo.2555741. I.J. Taneja, Embedded Palindromic Prime Numbers - I, RGMIA Research Report Collection, 20(2017), Art. 121, pp. 1-86, http://rgmia.org/papers/v20/v20a121.pdf.