299745

Appears in sequences

• Given n, let S denote the set of numbers c_1*c_2*...*c_n where 1<=c_1<=c_2<=...<=c_n<=n; a(n) = number of members of S that have a unique representation of this form.at n=16A160375
• Number of vertices with even distance from the root in "0-1-2" Motzkin trees on n edges.at n=13A179176