1 4 2 7 12 July 8, 2019 16 32 64 128 1 2 4 7 12 sequence T 1 4 2 7 12 1 4 15 2 3x 2 =- 12 7 30 2 3 x 1 4 7 12 4 1 2 divided by 7 12 6 1 4 minus 2 7 12 Quy luật dãy số 1 2 4 7 12 1 4 8m 12 )- 7 =- 2 4 2 *( 1 8x9 )- 7 12 4 2 7 12 minus 1 4 4 2 *( 1 8x 32 ))- 7 12 4 1 9 11 x 4 7 12 2 3
