What comes next in the sequence; 6, 13, 25, 51, 101, ?, ?

Answer 1

Thanks for the query.

If we take a number as x then it's continuing like 2x +1 when the number goes to an even place and 2x -1 when the number goes an odd place.

So, when we put x = 6 it continues like 2*6 + 1 = 13
Then it goes on like 2*13 - 1 = 25.
Then 2*25 + 1 = 51
Then 2*51 - 1 = 101
Then 2*101 +1 = 203
Then 2*203 - 1 = 405

So, the answer is 203 and 405.

Answer 2

6*2+1=13
13*2-1=25
25*2+1=51
51*2-1=101
101*2+1=203
203*2-1=405

Answer 3

Here 6, 13, 25, 51, 101, ?, ?
hence
6*2=12+1=13
13*2=26-1=25
25*2=50+1=51
51*2=102-1=101
101*2=202+1=203