a(n) = 2^(n-1) * n! * Catalan(n-1) for n > 0 with a(0) = 0.
A052714
a(n) = 2^(n-1) * n! * Catalan(n-1) for n > 0 with a(0) = 0.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =48a(4) =960a(5) =26880a(6) =967680a(7) =42577920a(8) =2214051840a(9) =132843110400
External references
- oeis: A052714