4219993domain: NAppears in sequencesExpansion of 1/((1-x) * (1-6*x) * (1-11*x)).at n=6A016247Triangle T(n,k) read by rows: T(n, k) = (m*n - m*k + 1)*T(n - 1, k - 1) + (5*k - 4)*(m*k - (m - 1))*T(n - 1, k) where m = 0.at n=38A166973