39146
domain: N
Appears in sequences
- Number of base-3 pyramids of height n.at n=24A186507
- Composite numbers k such that phi(k) * psi(k) + 1 is a perfect square, where phi is the Euler totient function (A000010) and psi is the Dedekind psi function (A001615).at n=41A309653
- Radicands of pure cubic number fields of type BETA and subtype M0.at n=40A363699