Binary scORe

Objective

Given a number n we will define its scORe to be 0 | 1 | 2 | 3 | ... | n, where | is the bitwise OR operator.

Write a function that takes n and finds it's scORe.

n	scORe n
0	0
1	1
49	63
1000000	1048575

Any feedback would be much appreciated

Try it yourself!