905469domain: NAppears in sequencesNumber of (n+1) X (5+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=20A250726Number of connected dominating sets in the n-Cameron graph.at n=3A387373