%I #23 May 03 2019 08:40:29
%S 0,1,2,3,8281,8282,8283
%N Numbers that can be written from base 2 to base 9 using only the digits 0 to 3.
%C Conjectured to be complete.
%C Checked up to 2^16384 (≈ 1.2*10^4932) on Oct 31 2008. - _Daniel Mondot_, Jan 17 2016
%C Checked up to 2^65520 (≈ 3*10^19723) on Nov 13 2008. - _Daniel Mondot_, Jan 17 2016
%C It is a plausible conjecture that there are no more terms, but this has not been proved. - _N. J. A. Sloane_, Nov 17 2017
%H Stuart A. Burrell, Han Yu, <a href="https://arxiv.org/abs/1905.00832">Digit expansions of numbers in different bases</a>, arXiv:1905.00832 [math.NT], 2019.
%t Select[Range[0, 10^5], Function[n, Times @@ Boole@ Map[Max@ IntegerDigits[n, #] <= 3 &, Range[2, 9]] > 0]] (* _Michael De Vlieger_, Aug 15 2016 *)
%Y cf. A146025, A146027, A131646, A275600
%K nonn,base
%O 1,3
%A _Daniel Mondot_, Oct 27 2008