22436251

Appears in sequences

• Expansion of (2/(3*sqrt(1-4*z)-1+4*z))*((1-sqrt(1-4*z))/(2*z))^k with k=10.at n=10A172067
• a(n) = Sum_{k=0..n} C(n+k,n-k)*C(2*n-k,k).at n=10A183160
• Number of 5 X n 0..1 arrays with rows unimodal and columns nondecreasing.at n=19A225012