Question

Find the first four terms of the recursive sequence: a1 = 8 and an = an-1+n.

Answer 1

a1 = 8

a2 =10

a3 = 13

a4 = 17

Explanation:

The first term is a1 = 8

The second term is a2 = a1 + n

= 8+2

= 10

The third term is a3 = a2 + n

= 10+3

= 13

The fourth term is a4 = a3 + n

= 13+4

= 17