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 A144917 #7 Jun 21 2025 14:40:04 %S A144917 1,3,7,13,19,25,31,37,43,49,55,61,67,73,79,85,91,97,103,109,115,121, %T A144917 127,133,139,145,151,157,163,169,175,181,187,193,199,205,211,217,223, %U A144917 229,235,241,247,253,259,265,271,277,283,289,295,301,307,313,319,325,331 %N A144917 a(n) is the maximal odd value attained by A144916(n). %C A144917 Most of these are primes or semiprimes. %C A144917 Is a(n) = A271114(n-2) for n>=3 ? - _R. J. Mathar_, Jun 21 2025 %Y A144917 Cf. A016921, A144912, A144916 %K A144917 easy,nonn %O A144917 1,2 %A A144917 _Reikku Kulon_, Sep 25 2008