2 1 4 9 16 July 8, 2019 16 32 64 128 1 4 9 16 n 2 formula 1 4 9 16 n 2 formula proof X 1 4 2 9 16 2 4 8 х 1 3 9 16 1 2 9 16 x 3 4 1 2 4 9 16 sequence 1 4 x 2 9 16 bolt 1 4 x 3 2 9 16 0 4 1 2 divided by 9 16 9 16 x 2 1 4 casing Sum of 1 4 9 16 n 2 X 1 2 3 4 y 1 4 9 16 9 16 x 2 1 4 crown molding Let a 1 2 3 4 b 1 4 9 16
