470400

Appears in sequences

• Least solution to cototient(x) = n!, where cototient(x) = x-phi(x).at n=8A066278
• Triangle read by rows: T(n,k) = n!*Pell(n-k+1)/k!, where Pell(n)=A000129(n).at n=39A110327
• Irregular triangle read by rows: coefficients of Laplace transform of a Bernoulli expansion: LaplaceTransform[t*Exp[x*t]/(Exp[t] - 1), t, 1/t] = Zeta[2,1+1/t-x]->shifted to Zeta[4,1+1/t-x].at n=21A137496
• Coefficient array for the monic X_1-Laguerre polynomials with parameter k=1.at n=48A199580
• Partition array a(n,k) with the total number of necklaces (C_n symmetry) with n beads, each available in n colors, with color signature given by the k-th partition of n in Abramowitz-Stegun(A-St) order.at n=60A212360
• Sequence A255412 sorted into ascending order, with duplicates removed.at n=24A254035
• a(n) = A000203(A255334(n)).at n=28A255412
• Triangle read by rows. A generalization of unsigned Lah numbers, called L[2,1].at n=31A286724
• Triangle read by rows: T(n,k) (0 <= k <= n) = k!*(Stirling2(n,k)+(k+1)*Stirling2(n,k+1))^2.at n=25A334689
• Number of copies of the star graph S(2,2,1) contained within the n-dimensional hypercube graph.at n=6A352994
• Expansion of e.g.f. A(x,y) satisfying A(x,y) = 1 + x*A(x,y) * exp(x*y * A(x,y)), as a triangle read by rows.at n=31A366230
• a(n) = denominator((1/n!)*Sum_{k=1..n} 1/(2*k)).at n=7A377401