27095040

Appears in sequences

• 2^(n-2)*n*(n+2)!/3.at n=7A058667
• Matrix square of unsigned Lah triangle abs(A008297(n,k)) or A105278(n,k).at n=39A079621
• Reduced denominators of the raw moments of the distribution of areas for triangles picked at random in a unit square.at n=6A093159
• Triangular array: rows are the f-vectors of simplicial complexes dual to permutohedra of type D_n.at n=41A145902
• Triangle of coefficients of a sequence of polynomials related to the enumeration of linear labeled rooted trees.at n=35A194649