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%I #10 Dec 19 2014 14:16:33
%S -1,0,-1,0,0,0,0,0,-1,1,1,1,1,1,-1,3,3,3,3,3,3,2,0,0,0,0,0,0,0,-1,2,2,
%T 5,5,5,5,5,5,9,9,10,10,8,8,8,8,8,11,11,11,8,8,8,8,8,12,12,12,12,12,11,
%U 8,8,8,8,8,8,8
%N a(n) = (A251551(n)-1)/2.
%H Chai Wah Wu, <a href="/A251552/b251552.txt">Table of n, a(n) for n = 1..10000</a>
%o (Haskell)
%o a251552 = flip div 2 . subtract 1 . a251551
%o -- _Reinhard Zumkeller_, Dec 19 2014
%Y Cf. A098550, A247253, A251416, A251417, A251546-A251551.
%K sign
%O 1,16
%A _N. J. A. Sloane_, Dec 18 2014
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