If a1=5, a2=4 and a(n) = |(a(n-1) - a(n-2)|^(n-3) for n>=3, the a5=?
I get a(3) = |a(2)-a(1)|^0 = 1
a(4) = |a(3)-a(2)|^(4-3) = |1 - 4|^1 = 3
a(5) = |a(4) - a(3)|^(5-3) = |3 - 1|^2 = 4
a(5)=4
but the answer is 16. Can somebody explain what we're doing wrong?