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%I #13 Jan 16 2022 09:15:52
%S 1,3,5,6,7,9,11,13,15,17,18,19,21,23,25,27,29,30,31,33,35,36,37,39,41,
%T 42,43,45,47,49,51,53,54,55,57,59,61,63,65,66,67,69,71,73,75,77,78,79,
%U 81,83,85,87,89,90,91,93,95,97,99,101,102,103,105,107,108
%N a(n) = (1/3)*A277569(n).
%C From _Amiram Eldar_, Jan 16 2022: (Start)
%C Numbers whose 3-adic valuation is not smaller than their 2-adic valuation.
%C The asymptotic density of this sequence is 3/5. (End)
%H Clark Kimberling, <a href="/A277573/b277573.txt">Table of n, a(n) for n = 1..10000</a>
%t z = 260; a[b_] := Table[Mod[n/b^IntegerExponent[n, b], b], {n, 1, z}]
%t p[b_, d_] := Flatten[Position[a[b], d]]
%t p[6, 3]/3
%t (* second program *)
%t Select[Range[200], IntegerExponent[#, 3] >= IntegerExponent[#, 2] &] (* _Amiram Eldar_, Jan 16 2022 *)
%Y Cf. A007814, A007949.
%Y Cf. A277568, A277569, A277572, A277574.
%K nonn,easy
%O 1,2
%A _Clark Kimberling_, Nov 01 2016
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