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 A201012 #14 Feb 16 2025 08:33:16 %S A201012 5,10,13,15,17,20,25,26,30,34,35,37,39,40,43,45,50,51,52,53,55,59,60, %T A201012 61,65,67,68,70,71,73,74,75,78,79,80,83,85,86,89,90,91,95,97,100,101, %U A201012 102,103,104,105,106,109,110,111,113,115,117,118,119,120,122,125,127 %N A201012 Integers that cannot be written as the product and/or quotient of Lucas numbers. %H A201012 Arkadiusz Wesolowski, <a href="/A201012/b201012.txt">Table of n, a(n) for n = 1..10000</a> %H A201012 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/LucasNumber.html">Lucas Number</a> %H A201012 <a href="/index/Lu#Lucas">Index entries for Lucas sequences</a> %Y A201012 Cf. A000032, A200381, A200995, A201011. Complement of A201010. %K A201012 nonn %O A201012 1,1 %A A201012 _Arkadiusz Wesolowski_, Jan 08 2013