53278

Appears in sequences

• Number of (n+1) X 4 0..1 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively.at n=27A204646
• a(n) = A101036(n) - A076336(n).at n=28A271110
• Number of series reduced trees with n nodes and integer labeled leaves covering an initial interval of positive integers.at n=9A339648
• Number of ways to partition the set of vertices of a convex n-gon into non-intersecting directed polygons.at n=12A350599