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 A046398 #7 Oct 10 2019 22:46:09 %S A046398 244868442,1346776431,2012112102,2050550502,2222442222,2274994722, %T A046398 2402442042,2435775342,2601661062,2615775162,2806886082,4116996114, %U A046398 4163773614,4188998814,4305335034,4501551054,4515665154,4542992454 %N A046398 Palindromes with exactly 8 distinct prime factors. %Y A046398 Cf. A046334. %K A046398 nonn,base %O A046398 1,1 %A A046398 _Patrick De Geest_, Jun 15 1998