145713

Appears in sequences

• Number of primes <= 5^n.at n=9A055730
• Euler transform of Euler totient function phi(n), cf. A000010.at n=27A061255
• Number of all polyhedra (tetrahedra of any orientation and octahedra) of any size, formed when intersecting a regular tetrahedron by planes parallel to its sides and dividing its edges into n equal parts.at n=35A216175