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%I #8 Sep 06 2017 04:08:27
%S 1,-1,-1,-1,-2,-3,-6,-10,-19,-34,-63,-115,-213,-391,-723,-1333,-2463,
%T -4547,-8403,-15522,-28686,-53006,-97963,-181042,-334606,-618415,
%U -1142994,-2112545,-3904592,-7216810,-13338856,-24654268,-45568784,-84225393,-155675230
%N Expansion of 1 - x/(1 - x/(1 - x^2/(1 - x^2/(1 - x^3/(1 - x^3/(1 - x^4/(1 - x^4/ ...))))))), a continued fraction.
%F a(n) = -A227309(n-1) for n > 0.
%Y Cf. A006958, A227309, A291148 (similar sequence).
%K sign
%O 0,5
%A _Seiichi Manyama_, Sep 04 2017
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