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 A077176 #6 Dec 05 2013 19:55:49 %S A077176 2,6,30,210,6006,67830,690690,35303730,3383531970,29248649430, %T A077176 1846079805570,220495674290430,15231748284963210,328001307608664690, %U A077176 58030069605260142390,4938238739984380540710,182365421703667931839110 %N A077176 Largest squarefree number that divides A077175(n). %Y A077176 Cf. A077172, A077173, A077174, A077175, A100918. %K A077176 nonn %O A077176 1,1 %A A077176 _Amarnath Murthy_, Nov 01 2002 %E A077176 Extended by _Ray Chandler_, Nov 29 2004