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4 Answers

1*2=2
2+2=4
41=3
3*2=6
6+2=8
81=7
7*2=14
14+2=16
161=15
therefore the answer is 15
we first multiply by 2 ,add two ,subtract one and so on
hope this helps ðŸ™‚
Source(s): math 
The simplest sequence appears to be 15
1*2=2
2+2=4
41=3
3*2=6
6+2=8
81=7
7*2=14
14+2=16
161=15
Multiply by 2
Add 2
Subtract 1
Repeat
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15 because what youâ€™re doing is skipping one and putting it after. 2 4 3 and 6 8 7 and then 14 16 15

15. The pattern is x+x+21. When u get to 16 the pattern dictates it is time to subtract one. After 16, the next number would be 30 then 32, 31,62,64,63 etc