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%I #8 Aug 22 2021 22:36:32
%S 33,39,82,88,131,137,180,186,229,231,273,284,327,333,376,382,425,431,
%T 474,480,523,529,572,574,616,627,670,676,719,725,768,774,817,823,866,
%U 872,915,917,959,970,1013,1019,1062,1068,1111
%N Numbers k such that 4 and 5 occur juxtaposed in the base-7 representation of k but not of k-1.
%Y Cf. A007093.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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