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 A023806 #12 Mar 22 2025 17:38:00 %S A023806 0,1,2,3,4,5,6,7,8,9,10,11,12,14,15,16,17,18,19,20,21,22,23,24,25,27, %T A023806 28,29,30,31,32,33,34,35,36,37,38,40,41,42,43,44,45,46,47,48,49,50,51, %U A023806 53,54,55,56,57,58,59,60,61,62,63,64,66,67,68,69,70,71,72,73 %N A023806 Xenodromes: all digits in base 12 are different. %C A023806 Last term is a(1193556233) = 8842413667692. - _Charles R Greathouse IV_, Jun 16 2012 %H A023806 Paolo Xausa, <a href="/A023806/b023806.txt">Table of n, a(n) for n = 1..10000</a> %t A023806 Select[Range[0, 100], Max[DigitCount[#, 12]] == 1 &] (* _Paolo Xausa_, Mar 22 2025 *) %K A023806 nonn,base,fini,easy %O A023806 1,3 %A A023806 _Olivier Gérard_