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%I #7 Apr 14 2023 10:54:21
%S 0,1,2,4,5,7,8,9,10,14,15,16,17,18,20,21,23,28,29,30,31,32,33,34,36,
%T 37,39,40,41,42,46,47,56,57,58,60,61,62,63,64,65,66,68,69,71,72,73,74,
%U 78,79,80,81,82,84,85,87,92,93,94,95,112,113,114,116,117,119,120,121,122
%N Numbers having no isolated digits "11" in their binary representations.
%H Reinhard Zumkeller, <a href="/A173025/b173025.txt">Table of n, a(n) for n = 1..1000</a>
%F A173021(a(n+1)) = A173021(a(n)) + 1.
%Y Cf. A144795, A173021.
%Y A173024 is a subsequence.
%K base,nonn
%O 1,3
%A _Reinhard Zumkeller_, Feb 07 2010
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