A058894 Squarefree semiprimes A006881(m) such that |A006881(m)-A007304(m)| = 1.

1280073, 1280438, 1280441, 1281166, 1281191, 1281242

Offset: 1

Author

Naohiro Nomoto, Jan 08 2001

Keywords

• nonn
• more

Comments

From Amiram Eldar, Jun 20 2025: (Start)

The corresponding values of m are 265608, 265682, 265683, 265832, 265837 and 265849, and the corresponding values of A007304(m) are 1280074, 1280437, 1280442, 1281165, 1281190 and 1281241.

a(7) > 10^8, if it exists. (End)

Crossrefs

Cf. A006881, A007304.

Extensions

Offset corrected by Amiram Eldar, Jun 20 2025