22781250

Appears in sequences

• Bhaskara twins: n such that 2*n^2 = X^3 and 2*n^3 = Y^2.at n=14A106318
• Numbers k such that phi(sigma(k))/sigma(phi(k)) = 2.at n=26A229238
• Ordered union of the sets {h^6, h >=1} and {2*k^6, k >=1}.at n=30A249073
• Numbers k such that the Diophantine equation x^3 + y^3 + 2*z^3 = k has nontrivial primitive parametric solutions.at n=20A338933
• Dirichlet g.f.: Product_{k>=2} 1 / (1 - k^(-s))^(k^6).at n=14A343286