Can anyone solve this recurrance relation ASAP, em desparate for solutions...
1. An = A^(3) n - 1 A^(2) n - 2 if A0 = 0 and A1 = 2.
Something is off here. Taking what you typed literally this reads
$\displaystyle A_n = (A_n)^3 - (A_n)^2 - 2$
which is not a recurrence.
Did you mean $\displaystyle A_n = (A_{n - 1})^3 \cdot (A_{n - 2})^2$?
The trouble is there that with $\displaystyle A_0 = 0$ the entire sequence is 0.
-Dan