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 A092197 #8 Feb 17 2019 18:31:21 %S A092197 0,0,0,2,0,0,0,0,3,0,0,0,0,2,0,0,0,0,3,0,0,0,0,2,0,0,0,0,3,0,0,0,0,2, %T A092197 0,0,0,0,3,2,2,2,2,4,2,2,2,2,5,0,0,0,0,2,0,0,0,0,3,0,0,0,0,2,0,0,0,0, %U A092197 3,0,0,0,0,2,0,0,0,0,3,0,0,0,0,2,0,0,0,0,3,3,3,3,3,5,3,3,3,3,6,0,0,0,0,2,0 %N A092197 Brevity advantage of "new style" over "old style" Roman numerals. %H A092197 Nathaniel Johnston, <a href="/A092197/b092197.txt">Table of n, a(n) for n = 1..3999</a> %F A092197 a(n) = A092196(n) - A006968(n). %e A092197 a(4)=2 because old style takes four letters (IIII) versus new style's two (IV). %p A092197 A092197 := proc(n) return length(convert(n, roman, period=early)) - length(convert(n, roman)): end: seq(A092197(n),n=1..105); # _Nathaniel Johnston_, May 18 2011 %Y A092197 Cf. A006968, A092196. %K A092197 base,easy,nonn %O A092197 1,4 %A A092197 _Marc LeBrun_, Feb 24 2004