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 A317423 #15 Aug 23 2018 17:00:20 %S A317423 16,18,23,34,44,45,42,84,128,116,54,133,132,159,196,134,124,156,145, %T A317423 144,225,149,261,153,143,148,147,142,229,263 %N A317423 a(n) is the smallest number such that with the letters of the name of that number we can spell the name of n numbers smaller than a(n) in Spanish. %e A317423 a(4) = 34 because with the letters of 34 (treinta y cuatro) we can spell these numbers: 1 (uno), 4 (cuatro), 11 (once) and 30 (treinta). Note that we can also write 40 cuarenta, but 40 is bigger than 34 so it does not count. %Y A317423 Cf. A317422 (English). %K A317423 nonn,word,more %O A317423 1,1 %A A317423 _Claudio Meller_, Jul 27 2018