This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A058894 #10 Jun 20 2025 08:10:12 %S A058894 1280073,1280438,1280441,1281166,1281191,1281242 %N A058894 Squarefree semiprimes A006881(m) such that |A006881(m)-A007304(m)| = 1. %C A058894 From _Amiram Eldar_, Jun 20 2025: (Start) %C A058894 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. %C A058894 a(7) > 10^8, if it exists. (End) %Y A058894 Cf. A006881, A007304. %K A058894 nonn,more %O A058894 1,1 %A A058894 _Naohiro Nomoto_, Jan 08 2001 %E A058894 Offset corrected by _Amiram Eldar_, Jun 20 2025