Miscellany

    static const int c[] =
        {
            4,  5,  6,  7,
            8,  9,  10, 11,
            12, 13, 14, 15,
            16, 17, 18, 19,
            20, 22, 24, 26,
            28, 32, 48, 64,
            72, 80, 96, 128,
            0
        };