27076

Appears in sequences

• Triangle read by rows: T(n, k) = (k+1)*A132393(n+1, k+1), for 0 <= k <= n.at n=31A028421
• Coefficients of x^n in the n-th iteration of (x + x^2) for n>=1.at n=6A112317
• Triangle related to the asymptotic expansion of E(x,m=4,n).at n=16A163934
• Triangle: T(n,k) equals the coefficient of x^n*y^k in the n-th iteration of x*(1+xy)/(1-x), for n>=1, 0<=k<n, as read by rows.at n=27A185755
• Number of (n+1) X (4+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)-x(i-1,j) in the j direction.at n=8A250607
• Numbers n such that the decimal number concat(5,n) is a square.at n=38A273360
• Number of Dyck paths having n (positive) levels and exactly n peaks per level.at n=3A288940
• Number A(n,k) of Dyck paths having exactly k peaks in each of the levels 1,...,n and no other peaks; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=24A288972
• Number of Dyck paths having exactly n peaks in each of the levels 1,2,3 and no other peaks.at n=3A289030
• Numbers k such that 417*2^k+1 is prime.at n=47A323108