What number should replace the question mark in this sequence? 1 ; 5 ; 21 ; ? ; 341 ; 1365

Question

What number should replace the question mark?

12 - - - 25

5 - - - 11

21 - - - 43

18 - - - 37

2 - - - ?

Answer 1

My answer is 85

1-5=4, 4*4=16
5-21=16, 16*4=64
21-85=64, 64*4=256
85-341=256, 256*4=1024
341-1365=1024

Multiply the subtracted answer with 4, we will get the answer which is the subtracted term of next two numbers. Is this logic is correct?