a(n) = Product_{i=floor((n + 1)/2)..n-1} binomial(n-1, i).
A208653
a(n) = Product_{i=floor((n + 1)/2)..n-1} binomial(n-1, i).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =4a(5) =50a(6) =90a(7) =5145a(8) =12544a(9) =3429216a(10) =11340000a(11) =15219319500a(12) =68309049600
External references
- oeis: A208653