David W. answered 05/15/17
Tutor
4.7
(90)
Experienced Prof
a1 = 1 [given in definition of sequence]
a2 = (a1)2 + 1 = 12 + 1 = 2 [ given by an= (an-1)2 + 1 ]
a3 = 22 + 1 = 5
a4 = 55 + 1 = 26
a5 = 262 + 1 = 677
The first 5 terms are: 1, 2, 5, 26, 677