Seeking sequence: 1, 3 / 4, 5 / 8 What is item 100 of If you find the sequence: 1, 3 / 4, 5 / 8, 13 / 24 What's item 100?

Seeking sequence: 1, 3 / 4, 5 / 8 What is item 100 of If you find the sequence: 1, 3 / 4, 5 / 8, 13 / 24 What's item 100?

The second term begins to conform to (2n-1) / 2 ^ n
n=100,
199/2^100