6566400

Appears in sequences

• Product{[n/k + 1/2]: k=1,2,...,n}, where [x + 1/2] denotes the integer nearest to x.at n=18A075999
• a(n) = Product_{k=0..n} (L(k)+1), where L=A000032 (Lucas numbers).at n=7A374654
• a(n) = (n!^2*n^(n-1)/4) * Sum_{k=4..n} A000276(k) / (n^k * (n-k)!).at n=5A377246