6706022400

Appears in sequences

• a(n) = n! + (n-1)!.at n=12A001048
• a(n) = (n-1)! * sigma(n).at n=12A038048
• Denominator of Sum_{k=0..n} (-1)^k/k!.at n=14A053556
• Size of largest conjugacy class in S_n, the symmetric group on n symbols.at n=13A059171
• Product of the composite numbers between n and 2n (both inclusive).at n=10A073840
• Product of terms in row n of A083110.at n=12A083112
• a(n) = n! * Sum_{d|n} (d/n)^d.at n=12A087905
• Expansion of e.g.f. (1/2)*(1+x)*log((1+x)/(1-x)).at n=14A098557
• a(n) = product of the first n integers from among those positive integers which are coprime to n.at n=12A123279
• Product of the composite numbers between n+1 and 2n, both inclusive.at n=10A157625
• Expansion of e.g.f. 1 + x*arctanh(x), even powers only.at n=7A166356
• Sum of the sizes of normalizers of all prime order cyclic subgroups of the symmetric group S_n.at n=11A181966
• Denominators to Dirichlet inverse of Euler totient based version of series expansion for x/LambertW(x).at n=14A230284
• Least number k such that n!/k is prime.at n=12A242456
• a(n) is the number of partial derangements of an n-set with at least one orbit of size exactly n.at n=13A261766
• Denominator of the coefficients in the expansion of 1/W(x) - 1/x where W(x) is the Lambert W function.at n=13A264235
• a(n) = n! * Sum_{d in D(n+1)} (-1)^(d+1)*(n+1)/d, D(n) the divisors of n.at n=12A265024
• Denominator of cumulative weight of certain D-forests on n nodes.at n=14A301737
• Expansion of e.g.f. Sum_{k>=1} arctanh(x^k).at n=12A330505
• Expansion of e.g.f. Sum_{k>=1} arctan(x^k).at n=12A330511