%I #7 Aug 28 2020 06:59:46
%S 0,1,1,0,-1,-1,0,1,1,1,1,1,0,-1,-1,0,1,1,1,1,1,0,-1,-1,0,1,1,0,-1,-1,
%T 0,1,1,0,-1,-1,-1,-1,-1,0,1,1,0,-1,-1,-1,-1,-1,0,1,1,0,-1,-1,0,1,1,0,
%U -1,-1,0,1,1,1,1,1,0,-1,-1,0,1,1,1,1,1,0,-1,-1,0,1,1,1,1,1,0,-1,-1,0
%N The change in X-coordinate when moving from the n-1:th to the n-th point in the Peano curve A163334.
%H Antti Karttunen, <a href="/A163532/b163532.txt">Table of n, a(n) for n = 0..59049</a>
%F a(0)=0, a(n) = A163528(n) - A163528(n-1).
%Y A014578(n) = |a(n)|. These are the first differences of A163528. See also: A163533, A163534, A163536.
%K sign
%O 0,1
%A _Antti Karttunen_, Aug 01 2009
%E Name corrected by _Kevin Ryde_, Aug 28 2020