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 A027461 #11 Nov 05 2019 00:59:02 %S A027461 4,37,1489,2059,128431,621139,6527971,7435423,1005856303,1108515013, %T A027461 204122194357,220369102177,236110035385,1005497693095,307715924645815, %U A027461 324354836175055,122932720987212535,128616795798807715,134153085587608915,139549693559545915 %N A027461 Third column of A027447. %F A027461 Numerators of sequence a(3, n) in (a(i, j))^3 where a(i, j) = 1/i if j <= i, 0 if j > i. %K A027461 nonn %O A027461 3,1 %A A027461 _Olivier Gérard_ %E A027461 More terms from _Sean A. Irvine_, Nov 04 2019