C_{n+1}*C_n*C_{n-1}^2*C_{n-2}^4*...*C_2^{2^(n-2)}, where C_k are the Catalan numbers (A000108).
A028580
C_{n+1}*C_n*C_{n-1}^2*C_{n-2}^4*...*C_2^{2^(n-2)}, where C_k are the Catalan numbers (A000108).
Terms
- a(0) =1a(1) =2a(2) =10a(3) =280a(4) =235200a(5) =173859840000
External references
- oeis: A028580