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 A238047 #12 Dec 23 2024 14:53:43 %S A238047 6,10,15,26,40,48,60,70,76,90,98,108,126,140,160,170,190,200,208,228, %T A238047 250,270,290,300,311,330,358,380,400,408,430,460,478,500,502,520,540, %U A238047 560,580,600,601,620,640,660,680,700,702,720,740,760,780,800,806,828,850,870,890,900,915,940,960,980,1000 %N A238047 a(n) is the least number larger than the total number of letters in the Spanish names for all terms up to and including a(n). %C A238047 Spanish version of A233184. %H A238047 E. Angelini, <a href="https://web.archive.org/web/*/http://list.seqfan.eu/oldermail/seqfan/2013-December/012058.html">Cumulative quantity of letters used in a list of English number-names</a>, SeqFan list, Dec 05 2013 %e A238047 The total length up to a(n), followed by the name of a(n), is as follows: %e A238047 4 (seis), 8 (diez), 14 (quince), 24 (veintiseis), 32 (cuarenta), 47 (cuarenta y ocho), 54 (sesenta), 61 (setenta), 75 (setenta y seis), 82 (noventa), 96 (noventa y ocho), 107 (ciento ocho),... %Y A238047 Cf. A233184. %K A238047 nonn,word %O A238047 1,1 %A A238047 _Claudio Meller_, Feb 17 2014