8 5 4 9 July 8, 2019 16 32 64 128 8 5 4 9 1 8 5 4 9 1 7 8 5 4 9 1 7 sequence ( 5 8 4 + 9 3 - 8 4 (- 5 9 2 8 5 9 4 2 3 8 4 5 9 10 5 8 9 4 1 3 8 5 x 4 9 8 5 4 7 9 8 5 6 4 9 5 8 and 4 9 height difference N 5 8 )-( 4 9 n 7 5 8 4 9 3 8 5 7 x 4 9 14
