Catalan numbers C(n) such that sum of the factorials of digits of C(n) is semiprime.
A242897
Catalan numbers C(n) such that sum of the factorials of digits of C(n) is semiprime.
Terms
- a(0) =14a(1) =42a(2) =132a(3) =4862a(4) =35357670a(5) =1767263190a(6) =91482563640
External references
- oeis: A242897