(Membership)
0, -1, -1, 1, 1, 0, -1, 1, -1, -1, 2, 1, -1, 1, -3, -2, 5,__,__
It is hard to realize the sequence, but if you multiplied the first number with the third one and then subtracted the multiplication of the second and the fourth number, you would get the fifth number.
For example:
(0 x (-1)) - (-1 x 1) = 1
(-1x (1)) - (-1 x 1) = 0
(-1 x (1)) - (1 x 0) = -1
(1 x 0) - (1 x (-1)) = 1
(1 x (-1)) - (0 x 1) = -1
.
.
.
(-1 x (-3)) - (1 x (-2)) = 5
(1 x (-2)) - (-3 x 5) = 13
(-3 x 5) - (-2 x 13) = 11
=> the answer is 13, 11