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 A124362 #12 Jan 15 2025 16:41:57 %S A124362 2,199999,19999899919,1999989991899967,199998999189996699997, %T A124362 19999899918999669999699797,1999989991899966999969979699969, %U A124362 199998999189996699996997969996899977,19999899918999669999699796999689997699987,1999989991899966999969979699968999769998699901 %N A124362 Largest prime < 100000*a(n-1), a(1)=2. %Y A124362 Cf. A124262, A126031. %K A124362 nonn %O A124362 1,1 %A A124362 _Artur Jasinski_, Dec 16 2006 %E A124362 a(9)-a(10) from _Pontus von Brömssen_, Jan 15 2025