9202050

Appears in sequences

• a(n) is the number of n-step walks on square lattice such that 0 <= y <= x at each step.at n=15A005558
• Triangle of Hankel transforms of binomial(n+k, k).at n=52A120247
• Central column of triangle A090181.at n=8A125558
• Eighth column (and diagonal) of Narayana triangle A001263.at n=8A134289
• Ninth column (and diagonal) of Narayana triangle A001263.at n=7A134290
• Number of 7 X 8 matrices with elements in 0..n with each row and each column in nondecreasing order. 7,8,n can be permuted, see formula.at n=2A140916