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%I #8 Aug 22 2021 16:14:08
%S 6,9,22,24,36,41,54,57,70,73,86,88,96,118,121,134,137,144,164,169,182,
%T 185,198,201,214,216,228,233,246,249,262,265,278,280,292,297,310,313,
%U 326,329,342,344,352,374,377,384,454,457,470
%N Numbers k such that 1 and 2 occur juxtaposed in the base-4 representation of k but not of k-1.
%Y Cf. A007090.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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