12 22 n2 July 8, 2019 16 32 64 128 12 22 n2 n3 3 12 22 32 n2 formula S 12 22 32 n2 12 22 32 n2 formula proof 12 22 33 n2 formula 12 22 32 n2 n3 3 D 12 22 32 n2
