894103domain: NAppears in sequencesRow sums of triangle A049385.at n=5A049412G.f. satisfies: A(A(x)) = Sum_{n>=1} a(n)*x^n / Product_{k=1..n} (1 - k*x), where g.f. A(x) = Sum_{n>=1} a(n)*x^n.at n=7A193208Triangle read by rows: T(n,k) = number of j-covers of [n] with j<=k, k=1..2^n-1.at n=31A369950