N 4 9 1 July 8, 2019 16 32 64 128 N 4 9 12 N 4 9 11 N 4 9 10 N 4 9 13 N 4 15 9 15 1 4 9 16 n 2 formula 1 4 9 16 n 2 formula proof 1 4 9 n 1 2 N 1 4 p 9 N 1 4 p 9 ms 4 n 9 16 N 9 4 18 4 5 n 4 9 1 35 N 5 8 n 4 9 19 36
