1 2 4 7 12 July 8, 2019 16 32 64 128 1 2 4 7 12 sequence T 1 4 2 7 12 2 3 x 1 4 7 12 4 7 8 x 2 1 12 1 4 15 2 3x 2 =- 12 7 30 Quy luật dãy số 1 2 4 7 12 4 x 1 )+ 2 x 7 )= 12 2 5 x 4 7 12 1 1 9 11 x 4 7 12 2 3 6 1 4 minus 2 7 12 1 4 8m 12 )- 7 =- 2 4 2 *( 1 8x9 )- 7 12 4 7 12 divided by 1 2 4 5 2 7 12 minus 1 4
