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 A097960 #21 Sep 20 2020 01:09:57 %S A097960 0,5,4,2,9,8,6,7,3,1,14,50,55,54,52,59,58,56,57,53,51,40,45,44,42,49, %T A097960 48,46,47,43,41,19,18,16,17,10,12,90,95,94,92,99,98,96,97,93,91,80,85, %U A097960 84,82,89,88,86,87,83,81,11,15,60,65,64,62,69,68,66,67,63,61,70,75,74,72 %N A097960 Arrange 1-digit numbers in Spanish in alphabetical order, then 2-digit numbers, then 3-digit numbers, etc. %C A097960 In the 2007 Spanish film "Fermat's Room", a mathematician solves the "enigma" of how the numbers 5, 4, 2, 9, 8, 6, 7, 3, 1 are ordered. - _Jonathan Sondow_, Jul 20 2012 %H A097960 Álvar Ibeas, <a href="/A097960/b097960.txt">Table of n, a(n) for n = 1..10001</a> %H A097960 Wikipedia, <a href="http://en.wikipedia.org/wiki/Fermat's_Room">Fermat's Room</a> %e A097960 0="cero", 5="cinco", 4="cuatro", 2="dos", 9="nueve", 8="ocho", 6="seis", 7="siete", 3="tres", 1="un". %Y A097960 Cf. A000052 (English). %K A097960 easy,nonn,word,base %O A097960 1,2 %A A097960 Colin Backhurst (colin.backhurst(AT)ntlworld.com), Sep 21 2004