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 A362960 #26 Sep 06 2023 21:12:17
%S A362960 1,2,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,
%T A362960 6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
%U A362960 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
%N A362960 Length of longest Roman numeral representation of a number <= n.
%F A362960 a(n) = max_{i=1..n} A006968(i).
%Y A362960 Cf. A006968.
%K A362960 nonn,base,easy
%O A362960 1,2
%A A362960 _Leyang Zou_, Aug 05 2023