Studying the number Pi, I collected information on the years that are included in the number series.  This I extracted from Pi – 1907, 1909, 1927, 1931, 1932, 1938, 1949, 1953, 1957, 1959, 1960, 1964, 1971, 1989, 1995  2019 ( … Continue reading 3,1415926535…