there are many possible answers. Here is one sequence that works
There are the monic divisors of xn -1 with coefficients coefficients in {0,1,-1}
2, 4, 4, 8, 4, 14, 4, 16, 8, 14, 4, 48, 4, 14, 14, 32, 4, 50, 4, 48, 14, 14, 4, 162, 8, 14, 16, 48, 4, 136, 4, 64, 14, 14, 14, 286, 4, 14, 14, 160, 4, 136, 4, 48, 48, 14, 4, 550, 8, 50, 14, 48, 4, 186, 14, 164, 14, 14, 4, 1124, 4, 14, 48, 128, 14, 136, 4, 48, 14, 136
70. You just add 14 each time.
times 2 plus 2 minus 1 repeated so it would be 15, 30, 32
15 Because...+2 -1 x2 +2 -1 x2 +2 (-1)
The 2 numbers in a row are multiplied, then you subtract one and that's the next number in the sequence. EG, 2x2 = 4 4-1=3 2x3=6 6-1=5 3x5=15 15-1=14 number sequence is 2, 2, 3, 5, 14
14
70. You just add 14 each time.
times 2 plus 2 minus 1 repeated so it would be 15, 30, 32
What number best completes the sequence 1 1/2 5 10 1/2 18
15 Because...+2 -1 x2 +2 -1 x2 +2 (-1)
18
13 20 12
The 2 numbers in a row are multiplied, then you subtract one and that's the next number in the sequence. EG, 2x2 = 4 4-1=3 2x3=6 6-1=5 3x5=15 15-1=14 number sequence is 2, 2, 3, 5, 14
the sequence of operations is: double the first number, add 2 then subtract 1.2 = 1 * 2;4 = 2 + 2;3 = 4 - 1;6 = 3 * 2;8 = 6 + 2;7 = 8 - 1;14 = 7 * 2;16 = 14 + 2;30 = 15 * 2;32 = 30 + 2;31 = 32 - 1;etc.
15.
15
14 20.02.18.04.16.06.14.08.12.10.10.12.08.14.06.16.04.18.02.20
14