11975040000
domain: N
Appears in sequences
- a(n) = (2n+1)*n!.at n=12A007680
- Product of terms in row n of A083106.at n=12A083108
- a(1)=1. a(n+1) = n!/lcm(a(1),a(2),...,a(n)).at n=25A131120
- Total number of points in all permutations of [n] that are fixed or reflected.at n=13A335873
- Sum of GCD of cycle lengths over all permutations of [n].at n=13A346066