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%I #3 Mar 30 2012 16:50:24
%S 1,-2,1,1,-2,1,-4,5,1,1,-2,-4,1,-2,8,1,2,-10,1,-2,1,3,-2,1,1,7,-4,1,
%T -6,1,-12,8,1,1,7,8,-4,-2,1,-10,-2,-4,8,-6,1,1,8,1,18,-14,-10,-4,7,1,
%U 1,-2,-10,1,-2,1,1,6,1,8,-2,18,-4,-2,-18,-12,-7,19,-10,-2,1,1,8,8,1,7,1,-4,2,-10,8,-2,-4,-18,7,1,1,-6,1,1,10,-12,21
%N (A117000(8*n-1) - A117001(8*n-1))/2.
%D H. J. S. Smith, Report on the Theory of Numbers, reprinted in Vol. 1 of his Collected Math. Papers, Chelsea, NY, 1979, see p. 322.
%K sign
%O 1,2
%A _N. J. A. Sloane_, Apr 15 2006