424800

Appears in sequences

• Triangle of generalized Stirling numbers S_{3,2}(n,k) read by rows (n>=1, 2<=k<=2n).at n=18A078740
• Number of (w,x,y,z) with all terms in {1,...,n} and |x-y|>=|y-z|.at n=30A212682
• a(n) = n!^2 * [x^n] polylog(2,x)^4.at n=6A370226