Bradford T. answered 11/17/21
Tutor
4.9
(29)
Retired Engineer / Upper level math instructor
an = an-2(3-an-1)
a1=-1
a2=4
a3=a1(3-a2) = -1(3-4) = 1
a4=a2(3-a3) = 4(3-1) = 8
--- etc ---
Sequence = -1, 4, 1, 8, -5, 64, 305, - 19328