545834

Appears in sequences

• E.g.f.: (exp(x)-1)^2/(2-exp(x)).at n=8A052875
• Triangle read by rows: T(n,k) = Sum_{i=k..n} i!*Stirling2(n,i), n >= 1, 1 <= k <= n.at n=29A084416
• Triangle read by rows: T(n,k)=sum((n+1-i)!*stirling2(n,n+1-i),i=1..k), n>=1, 1<=k<=n.at n=34A084417
• Number of 0..n arrays x(0..5) of 6 elements with nondecreasing average value.at n=14A200766
• Number of ordered set partitions of [n] with at most seven elements per block.at n=8A276927
• Number of ordered partitions of an n-set without blocks of size 8.at n=8A343791