Continued cotangent recurrence a(n+1)=a(n)^3+3*a(n) and a(1)=15.
A145189
Continued cotangent recurrence a(n+1)=a(n)^3+3*a(n) and a(1)=15.
Terms
- a(0) =15a(1) =3420a(2) =40001698260
External references
- oeis: A145189
A145189
Continued cotangent recurrence a(n+1)=a(n)^3+3*a(n) and a(1)=15.