Explanation:
The first number in the sequence is -6.
The second number is -3, which is 1/2 the first number.
The third number is -2, which is 2/3 the second number.
The fourth number is -3/2, which is 3/4 the third number.
The fifth number is -6/5, which is 4/5 the fourth number.
So the pattern is:
