39916800

Appears in sequences

• Sorted list of orders of Weyl groups of types A_n, B_n, D_n, E_n, F_4, G_2.at n=27A001217
• a(n) = n! if n is odd otherwise 0 (from the Taylor series for sin x).at n=11A005212
• Triangle T(n,k) read by rows: associated Stirling numbers of first kind (n >= 2, 1 <= k <= floor(n/2)).at n=30A008306
• a(n) = (2*n+1)!.at n=5A009445
• Order of shuffle group on n cards {0..n-1} generated by i->n-1-i and i->min{2i,2n-1-2i}.at n=10A014767
• Product of consecutive factorials.at n=20A034882
• a(n) = prime(n)!.at n=4A039716
• Factorials having initial digit '3'.at n=2A045511
• Triangular array read by rows: a(n,k) = phi(n/k)*(n/k)^k*k! if k|n else 0 (1<=k<=n).at n=65A047916
• Triangle of number of permutations of {1, 2, ..., n} having exactly k cycles, each of which is of length >=r for r=3.at n=18A050211
• Triangle of number of permutations of {1, 2, ..., n} having exactly k cycles, each of which is of length >=r for r=4.at n=12A050212
• Triangle of number of permutations of {1, 2, ..., n} having exactly k cycles, each of which is of length >=r for r=5.at n=9A050213
• E.g.f. (1+x^3-x^4)/(1-x).at n=11A052565
• Expansion of e.g.f. (2 + x)/(1 - x^2).at n=11A052566
• E.g.f. (2+x+x^2)/((1-x)(1+x+x^2)).at n=11A052579
• E.g.f. (1+x^4-x^5)/(1-x).at n=11A052596
• E.g.f. x^3*(1+2x-2x^2)/(1-x).at n=11A052615
• E.g.f. (2+x+x^2+x^3)/(1-x^4).at n=11A052621
• E.g.f. (1+x^2-2x^3+x^4)/(1-x)^2.at n=10A052624
• Expansion of e.g.f. (2-x-2*x^2)/((1-x)*(1-2*x^2)).at n=11A052636