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%I #3 Mar 31 2012 13:21:18
%S 0,1,0,-1,0,0,1,0,1,0,1,0,0,-1,0,1,1,0,1,0,1,1,0,-1,0,1,0,-1,-1,0,-1,
%T 0,0,0,1,0,1,1,0,-1,0,1,0,-1,-1,0,-1,0,-1,-1,0,1,0,0,-1,0,-1,0,-1,0,0,
%U 1,0,-1,0,0,1,0,1,1,0,-1,0,1,0,-1,-1,0,-1,0,0,1,0,-1,0,0,1,0,1,0,1,0
%N The change in X-coordinate when moving from the n-1:th to the n-th term in the type I Hilbert's Hamiltonian walk A163357.
%H A. Karttunen, <a href="/A163538/b163538.txt">Table of n, a(n) for n = 0..65536</a>
%F a(0)=0, a(n) = A059253(n) - A059253(n-1).
%Y These are the first differences of A059253. See also: A163539, A163540, A163542.
%K sign
%O 0,1
%A _Antti Karttunen_, Aug 01 2009
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