1. (5 points) What are the first four terms of each sequence:
(a) $a_n = 4 - 2n$ \(\forall n \ge 0\)
(b) $b_n = 6 - 3 \cdot 2^n$ \(\forall n \ge 0\)
(c) $c_1 = 4$, $c_n = 3 \cdot c_{n-1} - 2$ \(\forall n \ge 2\)
(d) $d_1 = -1$, $d_n = 5 \cdot d_{n-1} + n$ \(\forall n \ge 2\)
(e) $c_0 = 1$, $c_1 = 1$, $c_n = n c_{n-1} + n^2 c_{n-2} + 1$ \(\forall n \ge 2\)