1389850

Appears in sequences

• Stirling numbers of the second kind S(n+3, n).at n=19A001297
• Number of (n+2) X 5 binary arrays avoiding patterns 001 and 101 in rows and columns.at n=16A202197
• a(n) = Sum_{k=0..floor(n/4)} binomial(n,k) * binomial(2*k,n-4*k).at n=22A389126