129720

Appears in sequences

• Main diagonal of table A083044.at n=19A083045
• Triangle T(n,k), 0<=k<=n, defined by T(n,k) = 0 if k<0 or k>n, T(0,0) = 1, T(n,k) = T(n,k-1)+T(n-1,k-1)+T(n-1,k)+T(n-1,k+1).at n=32A122479
• Expansion of 30*x*(1 + x) / (1 - x)^4.at n=22A316459