login
Numbers whose set of base-9 digits is {2,3}.
1

%I #18 Sep 08 2022 08:44:51

%S 2,3,20,21,29,30,182,183,191,192,263,264,272,273,1640,1641,1649,1650,

%T 1721,1722,1730,1731,2369,2370,2378,2379,2450,2451,2459,2460,14762,

%U 14763,14771,14772,14843,14844,14852,14853,15491,15492

%N Numbers whose set of base-9 digits is {2,3}.

%H Vincenzo Librandi, <a href="/A032809/b032809.txt">Table of n, a(n) for n = 1..1000</a>

%H <a href="/index/Ar#3-automatic">Index entries for 3-automatic sequences</a>.

%t Flatten[Table[FromDigits[#,9]&/@Tuples[{2,3},n],{n,9}]] (* _Vincenzo Librandi_, May 27 2012 *)

%o (Magma) [n: n in [1..16000] | Set(IntegerToSequence(n, 9)) subset {2, 3}];// _Vincenzo Librandi_, May 27 2012

%K nonn,base,easy

%O 1,1

%A _Clark Kimberling_