%I
%S 0,1,2,4,5,6,8,13,14,15,17,18,19,24,26,40,41,42,44,45,46,51,53,54,55,
%T 58,59,72,73,78,80,121,122,123,125,126,127,132,134,135,136,139,140,
%U 153,154,159,161,162,163,166,167,175,176,177,179,216,217,220,221,234,235
%N In ternary expansion of n, reading from left to right, successive runs of the digits occur in order ...,0,1,2,0,1,2,...
%e For example, any number whose ternary expansion is 11..122..200..011..11 passes the test.
%Y Cf. A037078A037080.
%K nonn,base,easy
%O 0,3
%A _N. J. A. Sloane_.
%E More terms from _Erich Friedman_
