2 5-19 July 8, 2019 16 32 64 128 2 5 1997 2 5 19 37 2 5 1999 2 5 1998 2 5 1990 2 5 19 37 series solved 2 5 1984 2 5 19 20 2 5 * 190 2 5 1900 2 5 19 4 2 5 195 2 5 192 2 5 19 7 2 5 19 9
