Recurrence sequence a(n)=a(n-1)^2-a(n-1)-1, a(0)=4.

A144744

Recurrence sequence a(n)=a(n-1)^2-a(n-1)-1, a(0)=4.

Terms

    a(0) =4a(1) =11a(2) =109a(3) =11771a(4) =138544669

External references