This is a 4 step sequence , starting with the number 1.
1) Double the number
2) Add 2
3) Subtract 1
4) Return to step 1) and repeat.
1 x 2 = 2 ; 2 + 2 = 4 ; 4 - 1 = 3 ; ..........7 x 2 = 14 ; 14 + 2 = 16.
Then the next number is generated by Step 3).. 16 - 1 = 15
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The next numbers in the sequence are... 16, then 88.
15
16 is the next squared number.
92 - 18 = 72 72 - 16 = 56 56 - 14 = 42 42 - 12 = 30 30 - 10 = 20 20 is the next number in the sequence.
The next number in the sequence is... 64