Question

A sequence is defined recursively by a1=1,an=(an-1+1)^2. Write the first 4 terms of the sequence.

Answer 1

a1=1
a2=(a_2-1+1)^2
=(a1+1)^2
=(1+1)^2
=4
a3=(a2+1)^2=5^2=25
a4=(a3+1)^2=(25+1)^2=26^2=676

Answer 2

Thank you!!!!! I see my mistake now...

Answer 3

You're welcome!