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%I #7 Nov 03 2015 17:03:10
%S 0,1,1,1,1,1,1,0,1,0,1,0,1,0,0,1,0,0,1,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,
%T 0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,
%U 0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1
%N Characteristic function of the range of A000009.
%C a(A000009(n)) = 1; a(A167377(n)) = 0.
%H Reinhard Zumkeller, <a href="/A167393/b167393.txt">Table of n, a(n) for n = 0..10000</a>
%H <a href="/index/Ch#char_fns">Index entries for characteristic functions</a>
%o (Haskell)
%o import Data.List.Ordered (member)
%o a167393 = fromEnum . flip member a000009_list
%o -- _Reinhard Zumkeller_, Nov 03 2015
%Y Cf. A000009, A167377, A167392.
%K nonn
%O 0,1
%A _Reinhard Zumkeller_, Nov 03 2009
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