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Exercise 2.5: Sequence Review: Write the first five terms of the following sequences:
a. b1 = 0, b2 = 1, bn = bn-1 - bn-2
b. c1 = 1, cn = cn-1 + n
c. d = 1, dn = 2dn-1
Exercise 2.6: Sequence Review: Find a formula for the general term an of the given sequence:
a. {1, 4, 7, 10, 13, ...}
b. {-1, 2, -6, 24, -120, ...}
c. {1, 4, 9, 16, 25, ...}
d. {0, 1, 3, 7, 15}