163459296000
domain: N
Appears in sequences
- Number of permutations of an n-set containing an 8-cycle.at n=15A029575
- a(n) = (n-1)!*(2^n-1) for n>=1, a(0)=0.at n=12A029767
- Number of labeled cyclic groups with n elements.at n=14A034381
- Number of labeled Abelian groups of order n.at n=14A034382
- Number of labeled groups.at n=14A034383
- Partial products of A003188 (Gray code).at n=14A048642
- Number of labeled cyclic groups with a fixed identity.at n=15A058161
- Number of labeled cyclic subgroups of S_n having order n.at n=15A074880
- Complexity (number of maximal spanning trees) in an unoriented simple graph with nodes {1,2,...,n} and edges {i,j} if i + j > n.at n=15A107991
- a(n) = (2*n + 1)!/(n + 1).at n=7A110468
- Denominators of T(n+1)/n! reduced to lowest terms, where T(n) are the triangular numbers A000217.at n=15A110561
- Degree of Lagrange resolvent of polynomial of composite degree.at n=9A137150
- Denominator of expression W_n occurring in analysis of bubble sort.at n=14A190187
- a(1) = a(2) = 1; for n >= 2, a(n) is the product of number k <= n such that GCQ_A(n, k) >= 2 (see definition in comments).at n=14A196442
- Number of n-permutations such that at least one cycle has size ceiling(n/2).at n=14A229244
- a(n) = n!/ceiling(n/2).at n=14A256881
- Number of 8-ary heaps on n elements.at n=16A273695
- Numerator of (2*(n+1)!/(n+2)).at n=14A273878
- a(n) = n!*ClausenNumber(n, 1)/(n + 1), Clausen numbers defined in A160014.at n=15A325871
- Denominators of the fractions f(n) such that (6/Pi^2)*f(n) is the asymptotic density of the numbers k with A280292(k) = sopfr(k) - sopf(k) = n.at n=18A338560