An X-Mensa dq question

Which of the numbers should fill in the ?.

4, 3, 4, 7, 0, 45, 7, 15, 64, 0, 1111, 55, 5, 5, 0, 20, 32, 1, ?

a) 2

b) 0

c) 20

d) 1

Hints:

1.