279417600

Appears in sequences

• a(n) = (n+3)*n!/2.at n=10A038720
• Expansion of e.g.f. (1+x-x^3)/((1-x)*(1-x^2)).at n=11A052687
• Expansion of e.g.f. (1+x-x^2)/((1-x)*(1-x^2)).at n=11A052689
• Number of labeled rooted trees with n nodes and 3 leaves.at n=6A055304
• a(n) = 7 * n!.at n=10A062098
• Number of alternating runs in all permutations of [n] (the permutation 732569148 has four alternating runs: 732, 2569, 91 and 148).at n=9A097971
• Smallest j associated with a(n) in A103277.at n=9A103278
• Triangle read by rows: T(n,k) = (n + 1)*(n + k)!.at n=26A143085
• Number of reduced words of length n in Coxeter group on 50 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I.at n=5A162919
• Triangle T(n, k) = c(n)/(c(k)*c(n-k)) where c(n) = (n-2)!*(n-1)!*n!*(n+1)!*(n+3)!/1440 with c(0) = c(1) = 1 and c(2) = 2, read by rows.at n=38A173890
• Triangle T(n, k) = c(n)/(c(k)*c(n-k)) where c(n) = (n-2)!*(n-1)!*n!*(n+1)!*(n+3)!/1440 with c(0) = c(1) = 1 and c(2) = 2, read by rows.at n=42A173890
• Triangle read by rows: T(n,k) (n>=1, 3<=k<=n+2) is the number of k-sequences of balls colored with n colors such that exactly two balls are of a color seen previously in the sequence.at n=51A281944
• a(n) = (n - 4)*n! for n>=0.at n=11A282822
• a(n) is the smallest k such that k = x_11 * x_12 * x_13 = x_21 * x_22 * x_23 = ... = x_n1 *x_n2 * x_n3 and x_11 + x_12 + x_13 = x_21 + x_22 + x_23 = ... = x_n1 + x_n2 + x_n3; x_ij >= 2.at n=9A339469
• Expansion of e.g.f. (1 - x)^(-x^4).at n=12A354624