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 A057616 #25 Jul 23 2015 10:59:24 %S A057616 1,3,21,189,36855,773955 %N A057616 Lucky numbers that are the product of the first m lucky numbers for some m. %C A057616 If it exists, a(7) > 732374267624. %C A057616 Intersection of A000959 and A256625. - _Chayim Lowen_, Jul 14 2015 %e A057616 1 * 3 * 7 * 9 * 13 * 15 = 36855, which is a lucky number. %Y A057616 Cf. A000959, A256625. %K A057616 nonn,hard %O A057616 1,2 %A A057616 _Naohiro Nomoto_, Oct 09 2000 %E A057616 One more term from _Sascha Kurz_, Oct 12 2001