380352

Appears in sequences

• Numerators of continued fraction convergents to sqrt(621).at n=6A042192
• Array read by downward antidiagonals: A(n,k) = A(n,k-1) + (k+1)*(A(n-1,k) + A(n-1,k+1)) with A(n,0) = A(n-1,0) + A(n-1,1), A(0,k) = 1, n >= 0, k >= 0.at n=40A379460