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 A059985 #25 Oct 15 2015 20:26:42 %S A059985 0,1,3,4,9,10,13,14,18,33,34,37,38,42,51,52,55,56,60,73,74,78,96,153, %T A059985 154,157,158,162,171,172,175,176,180,193,194,198,216,249,250,253,254, %U A059985 258,267,268,271,272,276,289,290,294,312,363,364,367,368,372,385,386,390,408,481 %N A059985 Łukasiewicz words as integers written in factorial base. %C A059985 There are A000108(n-1) (Catalan numbers) Łukasiewicz words of length n. %H A059985 Danny Rorabaugh, <a href="/A059985/b059985.txt">Table of n, a(n) for n = 0..10000</a> %H A059985 OEIS Wiki, <a href="/wiki/Łukasiewicz_words">Łukasiewicz words</a> %H A059985 <a href="/index/Lu#Lukasiewicz">Index entries for sequences related to Łukasiewicz</a> %e A059985 Łukasiewicz words: 0 01 011 002 0111 0021 0102 0012 0003 01111 00211 01021 00121 00031 01102 00202 01012 00112 00022 01003 00103 00013 00004 ... %e A059985 a(16) = f(01012) = 0*0! + 1*1! + 0*2! + 1*3! + 2*4! = 55. %e A059985 a(23713) = f(0000000000x) = 0*0! + ... + 0*9! + x*10! = 36288000, where x is the digit 10. - _Danny Rorabaugh_, Oct 15 2015 %Y A059985 Cf. A059984. %K A059985 nonn,base %O A059985 0,3 %A A059985 Claude Lenormand (claude.lenormand(AT)free.fr), Mar 07 2001 %E A059985 a(37)-a(60) from _Danny Rorabaugh_, Oct 15 2015