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 A076100 #9 Mar 18 2018 04:03:27
%S A076100 1,6,60,420,2520,27720,360360,360360,12252240,232792560,232792560,
%T A076100 5354228880,26771144400,80313433200,2329089562800,72201776446800,
%U A076100 144403552893600,144403552893600,5342931457063200,5342931457063200
%N A076100 Least common multiple of n numbers starting with n.
%e A076100 a(4) = lcm(4,5,6,7) = 420.
%t A076100 Table[ Apply[LCM, Table[i, {i, n, 2n - 1}]], {n, 1, 20}]
%o A076100 (PARI) a(n) = lcm(vector(n, k, n+k-1)); \\ _Michel Marcus_, Mar 18 2018
%Y A076100 Bisection of A003418.
%K A076100 nonn
%O A076100 1,2
%A A076100 _Amarnath Murthy_, Oct 08 2002
%E A076100 Edited and extended by _Robert G. Wilson v_, Oct 10 2002