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 A077210 #12 May 11 2025 18:32:31 %S A077210 2,3,7,22,89,446,2677,18741,149929,1349363,13493631,148429942, %T A077210 1781159305,23155070966,324170993526,4862564902891,77801038446257, %U A077210 1322617653586370,23807117764554661,452335237526538561,9046704750530771221,189980799761146195642 %N A077210 a(1) = 2, a(n+1) is the smallest squarefree number greater than n*a(n). %Y A077210 Cf. A038159. %K A077210 nonn %O A077210 1,1 %A A077210 _Amarnath Murthy_, Nov 02 2002 %E A077210 More terms from _Michel ten Voorde_ Jun 20 2003 %E A077210 a(14) onward corrected by _Sean A. Irvine_, May 11 2025