24293412

Appears in sequences

• Square array T(n,k) read by antidiagonals: number of tilings of an <n,k,n> hexagon.at n=39A103905
• Triangle of central coefficients of generalized Pascal-Narayana triangles.at n=48A120258
• Number of 3 X 6 matrices with elements in 0..n with each row and each column in nondecreasing order. 3,6,n can be permuted, see formula.at n=6A140903
• Number of 6 X 6 matrices with elements in 0..n with each row and each column in nondecreasing order. 6,6,n can be permuted, see formula.at n=3A140906
• Triangle T(n,m) read by rows: T(n,m) = Product_{i=0..5} binomial(n+i,m)/binomial(m+i,m).at n=48A142465
• Triangle T(n,m) read by rows: T(n,m) = Product_{i=0..5} binomial(n+i,m)/binomial(m+i,m).at n=51A142465
• Triangle T(i,j) read by rows: Number of plane bipolar orientations with i+1 vertices and j+1 faces.at n=27A296419
• Number of triples of non-crossing lattice paths from (0,0) to (n,n) using (1,0) and (0,1) as steps.at n=6A382136