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 A011762 #20 Apr 01 2024 06:31:21
%S A011762 4,3,3,4,6,5,4,5,4,5,4,4,4,5,7,6,9,10,9,10,6,9,9,10,12,11,10,11,10,11,
%T A011762 7,11,11,12,14,13,12,13,12,13,8,12,12,13,15,14,13,14,13,14,9,13,13,14,
%U A011762 16,15,14,15,14,15,7,11,11,12,14,13,12,13,12,13,7,11,11,12,14,13,12,13,12
%N A011762 Number of letters in n (in Spanish).
%C A011762 Spaces are ignored.
%H A011762 Álvar Ibeas, <a href="/A011762/b011762.txt">Table of n, a(n) for n = 0..10000</a>
%H A011762 Álvar Ibeas, <a href="/A011762/a011762.txt">Masculine cardinal numbers in Spanish from 0 to 32000</a>
%H A011762 <a href="/index/Lc#letters">Index entries for sequences related to number of letters in n</a>
%t A011762 Table[Length[Select[Characters[IntegerName[n,{"Spanish"}]],LetterQ]],{n,0,78}] (* _James C. McMahon_, Mar 31 2024 *)
%K A011762 nonn,word
%O A011762 0,1
%A A011762 Juan-Carlos Lerman (jclerm(AT)aztec.asu.edu)
%E A011762 Extended by _Ray Chandler_, Jul 16 2009