2642411520

Appears in sequences

• Quadruple factorial numbers n!!!!: a(n) = n*a(n-4).at n=32A007662
• a(n) = 4^n * n!.at n=8A047053
• Generalized Stirling number triangle of first kind.at n=36A051142
• Ratio of volume of n-dimensional ball to circumscribing n-cube is Pi^floor(n/2) divided by a(n).at n=16A087299
• Number of directed Hamiltonian paths in the 2n-crossed prism graph.at n=18A137885
• Triangle read by rows: T(n,L) = number of rho-labeled graphs with n edges whose labeling is bipartite with boundary value L.at n=52A255908
• a(n) = 2^n * floor(n/2)!at n=16A271216
• Triangle read by rows: T(n, m) = A285061(n, m)*m!, 0 <= m <= n.at n=44A285066
• a(n) = n! / (a(n-1) a(n-2) a(n-3)), where a(0) = a(1) = a(2) = 1.at n=32A372995