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%I #9 Apr 25 2021 12:14:39
%S 20881,20882,20883,20884,20885,20886,20887,20888,20889,20890,20891,
%T 20904,20905,20907,20908,20909,20910,20911,20912,20913,20914,20915,
%U 20916,20917,20918,20920,20921,20922,20923,20924
%N Numbers whose base-12 representation has exactly 5 runs.
%K nonn,base
%O 1,1
%A _Clark Kimberling_