a(n) = a(n-1)^2 - a(n-2)^2 with a(0) = 0, a(1) = 2.

A062000

a(n) = a(n-1)^2 - a(n-2)^2 with a(0) = 0, a(1) = 2.

Terms

    a(0) =0a(1) =2a(2) =4a(3) =12a(4) =128a(5) =16240a(6) =263721216

External references