What are the next three numbers in this sequence?

Each term of the given sequence is the decimal representation of palindromic binary numbers.
Now 27 = 11011 in binary.
The next three palindromic numbers are:
11111, 100001, 101101 and these are respectively 31, 33 and 45 in decimal representation.
Thus, the required missing numbers are: 31, 33 and 45.