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%I #7 Aug 25 2021 05:11:20
%S 25,31,74,80,123,129,172,181,223,227,270,276,319,325,368,374,417,423,
%T 466,472,515,524,566,570,613,619,662,668,711,717,760,766,809,815,858,
%U 867,909,913,956,962,1005,1011,1054,1060,1103
%N Numbers k such that 3 and 4 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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