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 A181934 #7 Apr 03 2012 15:34:37 %S A181934 1,2,3,5,10,20,25,50,100,250,300,400,500,1000,2000 %N A181934 Number of cents in U.S. Federal coinage, from 1793. %C A181934 Extends A112024 to span entire U.S. Mint history, including obsolete coinage such as 3 cent pieces and gold coins. %D A181934 M. Rosner, Building a U.S. Style Collection, The Numismatist, Nov. 2003, p. 1. %D A181934 R. S. Yeoman and K. Bressett, A Guide Book of United States Coins, Whitman Publishing LLC, 2009, page 5. %Y A181934 Cf. A112024 (number of cents in U.S. currency in 2005). %K A181934 nonn %O A181934 1,2 %A A181934 _Marc Alan Rosner_, Apr 02 2012