A Lucas-Lehmer sequence: a(0) = 4; for n>0, a(n) = a(n-1)^2 - 2.

A003010

A Lucas-Lehmer sequence: a(0) = 4; for n>0, a(n) = a(n-1)^2 - 2.

Terms

    a(0) =4a(1) =14a(2) =194a(3) =37634a(4) =1416317954

External references