What are the missing numbers in this sequence?

1.25, 3.5, 8, 17, 35, 71, ___, ___, 575,...

Double the previous number and add 1.

(71 * 2) + 1 = ?

Great answer.

Look at my convoluting over-thinking on my part

http://www.jiskha.com/display.cgi?id=1352662242

To find the missing numbers in this sequence, let's analyze the pattern.

If we look at the given sequence, we can see that each number is obtained by multiplying the previous number by 2, then subtracting 1.

1.25 * 2 - 1 = 2.5 - 1 = 1.5
3.5 * 2 - 1 = 7 - 1 = 6
8 * 2 - 1 = 16 - 1 = 15
17 * 2 - 1 = 34 - 1 = 33
35 * 2 - 1 = 70 - 1 = 69
71 * 2 - 1 = 142 - 1 = 141

Based on this pattern, we need to continue the sequence by performing the same operation on the previous number to obtain the next number.

141 * 2 - 1 = 282 - 1 = 281
281 * 2 - 1 = 562 - 1 = 561

Therefore, the missing numbers in the sequence are 281 and 561.