47950

Appears in sequences

• Number of n X n (0,1) matrices such that each row and each column is nondecreasing or nonincreasing.at n=6A032260
• A036918/2.at n=7A036919
• Number of (n+2) X 7 binary arrays avoiding patterns 001 and 110 in rows and columns.at n=4A202049
• T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 001 and 110 in rows and columns.at n=40A202052
• A046802(x,y) --> A046802(x,y+1), transform of e.g.f. for the graded number of positroids of the totally nonnegative Grassmannians G+(k,n); enumerates faces of the stellahedra.at n=29A248727