366850

Appears in sequences

• Triangle read by rows: T(n,k) is the number of noncrossing trees with n edges in which the leftmost leaf is at level k.at n=46A101409
• a(n) = (n-1)! * Sum_{d|n} 1/((d-1)! * (n/d)!^(d-1)).at n=9A370608
• Expansion of g*(1 + x*g), where g = 1+x*g^3 is the g.f. of A001764.at n=9A391380