17177160

Appears in sequences

• Number of walks on square lattice. Column y=2 of A052174.at n=13A005560
• Lah numbers: a(n) = n!*binomial(n-1,9)/10!.at n=4A111600
• Binomial(n-k,k) * binomial(n-k-1,k+1) where k = ceiling(n/4).at n=20A171002