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%I #17 Nov 09 2022 10:06:33
%S 1,0,-1,0,-2,0,-2,0,-2,0,-2,0,-3,0,-1,0,-2,0,-3,0,-2,0,-2,0,-2,0,-1,0,
%T -2,0,-4,0,-3,0,-1,0,-2,0,0,0,-1,0,-3,0,-3,0,-3,0,-3,0,-2,0,-3,0,-2,0,
%U -1,0,-1,0,-2,0,-1,0,0,0,-2,0,-1,0,-3,0,-4,0,-3,0,-2,0,-4,0,-4,0,-4,0,-3,0,-1,0,-2,0,-1,0,0,0,2
%N If n is even, a(n) = 0, if n is odd, a(n) = A002321(n), where A002321 is Mertens's function.
%H Antti Karttunen, <a href="/A181587/b181587.txt">Table of n, a(n) for n = 1..65537</a>
%F a(n) = A000035(n)*A002321(n).
%o (PARI) A181587(n) = if(n%2, sum(k=1, n, moebius(k)), 0); \\ _Antti Karttunen_, Sep 30 2018
%Y Cf. A000035, A002321.
%K sign,look
%O 1,5
%A _Mats Granvik_, Oct 31 2010
%E Definition corrected and more terms by _Antti Karttunen_, Sep 30 2018
%E Incorrect g.f. removed by _Georg Fischer_, Nov 09 2022
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