It's a four step sequence. 1 is called the initial/start or seed number.
Start with 1
....................................................
Step 1 : Double the previous number
Step 2 : Add 2
Step 3 : Subtract 1
Step 4 : Return to Step 1
16 occurs after Step 2 so it is followed by 15,30,32,31,62,64.........etc
25 36 49 64 81 100 121 144
The numbers are 15 and 1
41 122 365
45 then 58
15
13, 14, 16 - the numbers increase by 1 then 2 each time
The simplest sequence appears to be 15 1*2=2 2+2=4 4-1=3 3*2=6 6+2=8 8-1=7 7*2=14 14+2=16 16-1=15 Multiply by 2 Add 2 Subtract 1 Repeat
15 + 1 = 16, and 15 - 1 = 14, so the two numbers are 15 and 1.
3-6-7-14-15 x2 +1 x2 +1
The numbers are: 15 and 1 because 15+1 = 16 and 15-1 = 14
possibly 16
25 36 49 64 81 100 121 144
The numbers are 15 and 1
The next number in the sequence is 15 - the sequence goes x2, +2, -1
15 The sequence seems to be x2, +2, -1.
I would make it 1 The above sequence is the numerical order of some of the numbers on a dart board
15 + 1 = 16 sum 15 - 1 = 14 difference