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%I #6 Nov 26 2024 13:53:04
%S 730,731,732,733,734,735,736,737,739,749,759,769,779,789,799,809,811,
%T 812,813,814,815,816,817,818,828,829,831,832,833,834,835,836,837,838,
%U 839,841,842,843,844,845,846,847,848,849,851
%N In base 9, (sum of even run lengths)=(sum of odd run lengths).
%t Select[Range[1000],With[{lens=Length/@Split[IntegerDigits[#,9]]},Total[Select[lens,OddQ]]==Total[Select[lens,EvenQ]]]&] (* _Harvey P. Dale_, Nov 26 2024 *)
%K nonn,base
%O 1,1
%A _Clark Kimberling_