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A158582 Numbers with at least two zeros in their binary representation. 6

%I #11 Jun 07 2023 16:10:40

%S 4,8,9,10,12,16,17,18,19,20,21,22,24,25,26,28,32,33,34,35,36,37,38,39,

%T 40,41,42,43,44,45,46,48,49,50,51,52,53,54,56,57,58,60,64,65,66,67,68,

%U 69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91

%N Numbers with at least two zeros in their binary representation.

%C Subsequence of A158581; complement of A089633; A023416(a(n))>1.

%C A265705(a(n),k) != A265705(a(n),a(n)-k) for at least one k <= a(n). - _Reinhard Zumkeller_, Dec 15 2015

%H R. Zumkeller, <a href="/A158582/b158582.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[100],DigitCount[#,2,0]>1&] (* _Harvey P. Dale_, Jan 19 2015 *)

%o (Haskell)

%o a158582 n = a158582_list !! (n-1)

%o a158582_list = [x | x <- [0..], a023416 x > 1]

%o -- _Reinhard Zumkeller_, Mar 31 2015

%Y Cf. A007088, A023416.

%Y Cf. A089633, A158581, A265705.

%K nonn

%O 1,1

%A _Reinhard Zumkeller_, Apr 16 2009

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Last modified April 16 10:45 EDT 2024. Contains 371709 sequences. (Running on oeis4.)