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 A027183 #7 Oct 24 2019 19:14:36 %S A027183 10,30,42,58,76,94,138,156,190,250,264,318,362,394,472,478,570,670, %T A027183 740,778,790,894,984,1018,1046,1106,1150,1290,1438,1594,1748,1758, %U A027183 1790,1930,2070,2096,2110,2218,2298,2494,2698,2900,2910,3012,3130,3266,3358,3594,3748,3838,3890 %N A027183 a(n) = n-th largest even number in array T given by A027170. %K A027183 nonn %O A027183 1,1 %A A027183 _Clark Kimberling_ %E A027183 Corrected and extended by _Sean A. Irvine_, Oct 24 2019