Continued cotangent recurrence a(n+1)=a(n)^3+3*a(n) and a(1)=7.

A145181

Continued cotangent recurrence a(n+1)=a(n)^3+3*a(n) and a(1)=7.

Terms

    a(0) =7a(1) =364a(2) =48229636

External references