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 A045495 #8 Jan 28 2016 05:39:31 %S A045495 1,1,1,3,3,11,13,13,17,23,23,73,101,101,101,101,103,103,111,113,113, %T A045495 117,123,123,173,323,373,1103,1103,1111,1113,1113,1117,1123,1123,1173, %U A045495 1323,1373,3323,3373,11373,13323,13373,17373,23323,23373,73373,101123 %N A045495 Smallest positive integer requiring at least n letters (not including hyphens) to be spelled out in English. %C A045495 Assumes British definition of billion trillion. Also assumes 'and' is used in numbers such as 'one hundred and one'. %Y A045495 Cf. A000916, A001166, A014388, A045494, A045495, A167509. %K A045495 nonn,word %O A045495 1,4 %A A045495 _Brian Galebach_ %E A045495 Added "at least" in definition, and a cross-reference _M. F. Hasler_, Nov 18 2009