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 A001167 M5122 N2218 #29 Jan 13 2023 21:13:02 %S A001167 1,21,21000,101,121,1101,1121,21121,101101,101121,121121,1101121, %T A001167 1121121,21121121,101101121,101121121,121121121,1101121121,1121121121, %U A001167 21121121121,101101121121,101121121121,121121121121,1101121121121,1121121121121,21121121121121 %N A001167 Smallest natural number requiring n words in English (as spoken in England). %D A001167 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %D A001167 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A001167 Robert G. Wilson v, <a href="/A000027/a000027.txt">American English names for the numbers from 0 to 11159 without spaces or hyphens</a>. %e A001167 One, twenty-one, twenty-one thousand, one hundred and one, one hundred and twenty-one, ... %K A001167 nonn,word %O A001167 1,2 %A A001167 _N. J. A. Sloane_ %E A001167 Edited by _N. J. A. Sloane_, Jul 05 2008 %E A001167 a(20) and beyond from _Michael S. Branicky_, Jan 13 2023