20432412000
domain: N
Appears in sequences
- a(n) = (4n+3)!/4^n.at n=3A052278
- Product of numbers < n which do not divide n (or 1 if no such numbers exist).at n=15A055067
- Number of permutations of 1..n with no element e[i>=2]<e[1+floor((i-2)/3)] (3-way heap).at n=17A178008
- The product of the positive integers <= n that are strongly prime to n.at n=17A181832