a(n) = 4^(n-1) * n! * Catalan(n-1) for n > 0, with a(0) = 0.
A052734
a(n) = 4^(n-1) * n! * Catalan(n-1) for n > 0, with a(0) = 0.
Terms
- a(0) =0a(1) =1a(2) =8a(3) =192a(4) =7680a(5) =430080a(6) =30965760a(7) =2724986880a(8) =283398635520
External references
- oeis: A052734