774000
domain: N
Appears in sequences
- Square array of lambda(k,n), where lambda is defined in A055203. Number of ways of placing n identifiable positive intervals with a total of exactly k starting and/or finishing points.at n=72A059117
- Triangle T(n,k) of number of loopless multigraphs with n labeled edges and k labeled vertices and without isolated vertices, n >= 1; 2 <= k <= 2*n.at n=28A122193
- a(n) = sigma_2(n) * sigma_3(n).at n=13A379814