2844979200

Appears in sequences

• Array used for numerators of g.f.s for column sequences of array A078741 ((3,3)-Stirling2).at n=18A089517
• Triangle, read by rows, T(n, k) = (-1)^n*(n!/k!)^2*binomial(n-1, k-1).at n=29A169656
• T(n,k) = Sum of multinomial(n; n_1,n_2,...,n_k)^2, where the sum extends over all compositions (n_1,n_2,...,n_k) of n into exactly k nonnegative parts.at n=34A192722
• Triangular array read by rows. T(n,k) is the number of ways to form an ordered pair of n-permutations and then choose a size k subset of its common descent set, n >= 0, 0 <= k <= max{0,n-1}.at n=30A362589