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%I #12 Oct 20 2017 14:26:57
%S 0,0,0,1,0,1,0,0,1,1,0,1,0,1,1,1,0,1,0,1,1,1,0,1,1,1,0,1,0,1,0,1,1,1,
%T 1,0,0,1,1,1,0,1,0,1,1,1,0,1,1,1,1,1,0,1,1,1,1,1,0,1,0,1,1,0,1,1,0,1,
%U 1,1,0,1,0,1,1,1,1,1,0,1,1,1,0,1,1,1,1,1,0,1,1,1,1,1,1,1,0,1,1,0,0,1,0,1,1
%N a(n) = characteristic function of numbers k such that A007955(m) = k has no solution for any m, where A007955(m) = product of divisors of m.
%C a(n) = characteristic function of numbers from A174896(n).
%C a(n) = 1 if A007955(m) not equal to n for any m, else 0.
%H Antti Karttunen, <a href="/A174898/b174898.txt">Table of n, a(n) for n = 1..20000</a> (computed from the b-file of A174897)
%H <a href="/index/Ch#char_fns">Index entries for characteristic functions</a>
%F a(n) = 1 - A174897(n).
%Y Cf. A007955, A174896, A174897.
%K nonn
%O 1,1
%A _Jaroslav Krizek_, Apr 01 2010
%E More terms from _Antti Karttunen_, Oct 20 2017