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 A253591 #7 Aug 04 2025 10:13:36 %S A253591 2,3,3,3,3,5,7,7,7,7,7,7,7,7,7,7,7,7,11,13,13,13,13,13,13,13,17,17,17, %T A253591 17,17,17,17,17,17,17,17,17,17,19,19,19,19,19,19,19,19,23,23,23,23,23, %U A253591 23,23,23,23,23,29,31,31,31,31,31,31,31,31,31,31 %N A253591 a(n) is the largest prime occurring (as a factor) in all terms up to A098550(n). %Y A253591 Cf. A098550, A253593. %K A253591 nonn,easy %O A253591 2,1 %A A253591 _Bob Selcoe_, Jan 04 2015