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%I #3 Apr 23 2021 08:29:26
%S 0,-1,1,0,-1,0,1,0,0,-1,0,1,-1,0,1,0,0,-1,1,0,-1,0,0,1,0,-1,0,1,-1,0,
%T 1,0,0,-1,1,0,-1,0,1,0,0,-1,0,1,-1,0,0,1,0,-1,1,0,-1,0,0,1,0,-1,0,1,
%U -1,0,1,0,0,-1,1,0,-1,0,1,0,0,-1,0,1,-1,0,1,0,0,-1,1,0,-1,0,0,1
%N First differences of paper-folding sequence A014577.
%Y Cf. A014577.
%K sign
%O 0
%A _N. J. A. Sloane_, Apr 23 2021
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