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First differences of A140472.
7

%I #6 Jul 13 2013 12:04:29

%S 1,1,0,2,-1,1,0,4,-3,1,0,2,-1,1,0,8,-7,1,0,2,-1,1,0,4,-3,1,0,2,-1,1,0,

%T 16,-15,1,0,2,-1,1,0,4,-3,1,0,2,-1,1,0,8,-7,1,0,2,-1,1,0,4,-3,1,0,2,

%U -1,1,0,32,-31,1,0,2,-1,1,0,4,-3,1,0,2,-1,1,0

%N First differences of A140472.

%C a(n) = A140472(n+1) - A140472(n);

%C a(A016825(n)) = 0; a(A042965(n)) <> 0;

%C for n > 0: a(A008586(n)) < 0, a(A005843(n)) <= 0, a(A042968(n)) >= 0;

%C a(A004273(n)) > 0.

%H Reinhard Zumkeller, <a href="/A214546/b214546.txt">Table of n, a(n) for n = 0..10000</a>

%o (Haskell)

%o a214546 n = a214546_list !! n

%o a214546_list = zipWith (-) (tail a140472_list) a140472_list

%Y Cf. A093879.

%K sign

%O 0,4

%A _Reinhard Zumkeller_, Jul 20 2012