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 A053402 #10 Oct 16 2017 02:11:50 %S A053402 100,200,400,800,1500,5000,10000,42195 %N A053402 Running distances (in meters) in Olympic athletics. %C A053402 Hurdle races not included. %C A053402 The marathon distance was only standardized to 42195 meters in 1924; before then, distances varied from about 40000 to 40750. This sequence does not include hurdles, steeplechase, relays, medleys, team races, walks, or cross country. It also excludes the 60 meter of the 1900 and 1904 Olympics and the women's 3000 meter in 1984, 1988, and 1992; additionally, the women's running events did not include all of these distances until 1996. - _Charles R Greathouse IV_, Jan 06 2016 %H A053402 R. Vaughan & N. J. A. Sloane, <a href="/A005901/a005901.pdf">Correspondence, 1975</a> %K A053402 easy,fini,nonn %O A053402 1,1 %A A053402 Jean Fontaine (jfontain(AT)odyssee.net), Jan 07 2000 %E A053402 a(8) and offset corrected by _Charles R Greathouse IV_, Jan 06 2016