178360

Appears in sequences

• Composite numbers such that the cube root of the sum of cubes of their prime factors is an integer.at n=8A134608
• Numbers such that the cube root of the sum of cubes of their prime factors is a nonprime integer.at n=6A134609
• Wiener index of the grid P_n x P_n, where P_n is the path graph on n vertices.at n=13A143945
• Number of 1:2:sqrt(5) proportioned triangles on an (n+1) X (n+1) grid.at n=25A190099
• G.f.: C(x,y)^2 - S(x,y)^2 = Sum_{n>=0} x^(2*n)*y/[Sum_{k=0..2*n+1} T(n,k)*y^k], where C(x,y) = Sum_{n>=0} x^(2*n) / Product_{k=1..2*n} (k + y) and S(x,y) = Sum_{n>=0} x^(2*n+1) / Product_{k=1..2*n+1} (k + y).at n=68A268647
• Expansion of e.g.f. x*(2 - x)*exp(x/(1 - x))/(2*(1 - x)^2).at n=7A323770