45187

Appears in sequences

• Row sums of triangle in A059397.at n=10A059398
• Number of symmetric paths in the first quadrant, from (0,0) to (n,0), consisting of steps U=(1,1), D=(1,-1), h=(1,0) and H=(2,0).at n=21A132887
• Irregular triangle T(n,m), numerators of coefficients in a power/Fourier series expansion of the plane pendulum's exact time dependence.at n=14A274130