Continued cotangent recurrence a(n+1)=a(n)^3+3*a(n) and a(1)=14.

A145188

Continued cotangent recurrence a(n+1)=a(n)^3+3*a(n) and a(1)=14.

Terms

    a(0) =14a(1) =2786a(2) =21624372014

External references