297275

Appears in sequences

• Random walks.at n=7A005025
• Expansion of x/(1 - 9*x + 28*x^2 - 35*x^3 + 15*x^4 - x^5).at n=8A122588
• a(n) = Sum_{k=0..n} A033184(n,k)*A033184(n,n-k), where Catalan triangle entry A033184(n,k) = C(2*n-k,n-k)*(k+1)/(n+1).at n=8A143388
• Number of nX8 binary arrays without the pattern 0 1 diagonally or vertically.at n=7A188842