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a(n) = 0 if sign(A325977(n)) = sign(A325978(n)), otherwise a(n) = 1.
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%I #9 Jun 08 2019 17:53:56

%S 1,0,0,1,0,0,0,0,1,0,0,1,0,0,0,0,0,1,0,0,0,0,0,1,1,0,1,0,0,0,0,0,0,0,

%T 0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,1,0,0,0,0,0,0,0,0,0,1,0,0,1,0,0,0,0,0,

%U 0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,1,1

%N a(n) = 0 if sign(A325977(n)) = sign(A325978(n)), otherwise a(n) = 1.

%H Antti Karttunen, <a href="/A326072/b326072.txt">Table of n, a(n) for n = 1..65537</a>

%H <a href="/index/Ch#char_fns">Index entries for characteristic functions</a>

%F For all n, a(A000396(n)) = 0.

%o (PARI) A326072(n) = (sign(A325977(n))!=sign(A325978(n))); \\ For other needed code, see in A325975.

%Y Characteristic function of A326071.

%Y Cf. A000396, A325963, A325975, A325977, A325978, A325981.

%K nonn

%O 1

%A _Antti Karttunen_, Jun 07 2019