76204800

Appears in sequences

• a(n) = (2n+1)*n!.at n=10A007680
• E.g.f. x(1-x)/(1-x-x^2).at n=10A052583
• Product of nonzero digits of A066553(n).at n=22A066584
• Product of terms in row n of A083106.at n=10A083108
• Triangle of the coefficient [x^k] of the polynomial 2^n*s_n(x) generated by exp(x*(1 - sqrt(1+t^2))/t) = Sum_{n>=0} s_n(x)*t^k/k! in row n, column k.at n=57A137378
• Triangular sequence of coefficients from the Laplace transform of a Bernoulli expansion function: LaplaceTransform[t*Exp[x*t]/(Exp[t] - 1), t, 1/t] =Zeta[2,1+1/t-x] -> shifted to Zeta[3,1+1/t-x].at n=44A137497
• A triangular sequence of coefficients from a Laplace Transform of a Bernoulli expansion function: LaplaceTransform[t*Exp[x*t]/(Exp[t] - 1), t, 1/t] = Zeta[2,1+1/t-x]->shifted to Zeta[5,1+1/t-x].at n=31A137498
• a(1)=1; a(n) = n*lcm(n, a(n-1)) for n > 1.at n=8A192217
• Table: T(n,k) = n!*binomial(n+1,2*k).at n=31A228955
• Table: T(n,k) = n!*binomial(n+1,2*k).at n=32A228955
• Triangle read by rows: terms T(n,k) of a binomial decomposition of n^n as Sum(k=0..n)T(n,k).at n=33A244123
• Triangular array: row n gives the coefficients of the polynomial p(n,x) defined in Comments.at n=42A249247
• Triangle read by rows: T(n,k) (n >= 1, 4 <= k <= n+3) is the number of k-sequences of balls colored with at most n colors such that exactly four balls are the same color as some other ball in the sequence.at n=41A292999
• Total number of points in all permutations of [n] that are fixed or reflected.at n=11A335873
• Coreful 4-abundant numbers: numbers k such that csigma(k) > 4*k, where csigma(k) is the sum of the coreful divisors of k (A057723).at n=23A340110
• Sum of GCD of cycle lengths over all permutations of [n].at n=11A346066
• Triangle T(m,n) read by rows: the number of homomorphisms of the complete graph on n vertices to the quasi-complete graph on m vertices, m>=3, 3<=n<m.at n=43A360961
• Integers k such that A000010(k) <= A008480(k).at n=29A364750