580316domain: NAppears in sequencesa(n) = Sum_{k=0..n} (-1)^(n-k)*Bell(k).at n=11A087650Number of Dyck paths of semilength n having the property that the heights of the first and the last peaks do not disagree.at n=14A193215Sum of the second largest parts of the partitions of 4n into 4 parts.at n=32A241084