416179814400
domain: N
Appears in sequences
- Successive numerators of Wallis's approximation to Pi/2 (unreduced).at n=14A001900
- Central factorial numbers: a(n) = 4^n * (n!)^2.at n=7A002454
- List of pairs (a(n),b(n)): f(n) = A004001(n); a(n) = f(n) + a(n-1); b(n) = f(n)*b(n-1).at n=37A154280
- Partial products of A004001.at n=18A172452
- a(n) = n^2*(n-2)^2*(n-4)^2*...*(1 or 2)^2.at n=14A184877
- Number of ways to place n nonattacking bishops on an n X n toroidal board.at n=13A189790