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%I #9 Apr 25 2021 01:24:36
%S 5,7,8,9,10,11,13,14,15,16,17,19,20,21,22,23,25,30,32,33,34,37,43,49,
%T 50,56,60,61,63,64,68,74,75,81,87,90,91,92,94,99,100,106,112,118,120,
%U 121,122,123,125,150,155,157,158,159,162,168,174
%N Numbers whose base-5 representation has exactly 2 runs.
%Y Cf. A007091.
%K nonn,base
%O 1,1
%A _Clark Kimberling_