A055945 n - reversal of base 2 digits of n (written in base 10).

0, 0, 1, 0, 3, 0, 3, 0, 7, 0, 5, -2, 9, 2, 7, 0, 15, 0, 9, -6, 15, 0, 9, -6, 21, 6, 15, 0, 21, 6, 15, 0, 31, 0, 17, -14, 27, -4, 13, -18, 35, 4, 21, -10, 31, 0, 17, -14, 45, 14, 31, 0, 41, 10, 27, -4, 49, 18, 35, 4, 45, 14, 31, 0, 63, 0, 33, -30, 51, -12, 21, -42, 63, 0, 33, -30, 51, -12, 21, -42, 75, 12, 45, -18, 63, 0, 33, -30, 75, 12, 45