%I #9 Feb 28 2017 22:59:30

%S 0,1,0,1,-1,0,1,-1,0,-1,0,1,0,1,-1,0,1,-1,0,1,-1,0,-2,0,1,0,1,-1,0,1,

%T -1,0,1,0,-1,0,1,-1,0,1,-1,0,1,-1,0,1,-1,0,1,0,-1,0,1,-1,0,1,-1,0,1,

%U -1,0,1,-1,0,1,-4,0,1,-1,0,1,0,1,-2,0,1,-1,0,1

%N a(n)=common difference of the n-th run of consecutive terms in arithmetic progression in A281579.

%C All terms are less than or equal to 1, and a(n)=1 implies a(n-1)=0.

%C There are no consecutive equal terms.

%H Rémy Sigrist, <a href="/A281772/b281772.txt">Table of n, a(n) for n = 1..10000</a>

%Y Cf. A281579

%K sign

%O 1,23

%A _Rémy Sigrist_, Jan 29 2017