4 7 10 20 July 8, 2019 16 32 64 128 4 7 10 20th term 4 7 10 x 209 4 7 25 10 x 20 16 19 7 10 vs 4 20 20 * 4 + 10 + 7 in french 1 4 7 10 suku ke 20
