%I #7 May 01 2013 21:06:45
%S 75,78,99,108,114,120,135,141,147,156,177,180,198,201,210,216,225,228,
%T 267,270,283,286,291,295,299,300,301,302,303,306,310,312,313,314,315,
%U 318,331,334,355,364,370,376,387,391,395,396
%N Numbers in which 0,1,2,3 all occur in base 4.
%C Or, numbers in which the number of distinct base 4 digits is 4.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
%E Edited by _N. J. A. Sloane_, Apr 05 2009 at the suggestion of R. J. Mathar
