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 A057734 #1 May 16 2003 03:00:00 %S A057734 1,2,4,10,24,66,180,522,1532,4984 %N A057734 Erroneous version of A000084. %D A057734 P. A. MacMahon, The combination of resistances, The Electrician, 28 (1892), 601-602; reprinted in Coll. Papers I, pp. 617-619. %K A057734 dead %O A057734 1,2