%I #12 Apr 24 2015 06:32:19
%S 1,1,2,-1,3,-1,5,-2,4,4,2,-11,15,6,-8,4,6,6,4,-6,8,4,-37,39,-37,41,
%T -39,1,44,-32,28,-16,-23,45,-39,29,16,-49,47,-41,47,-45,7,-1,25,16,6,
%U 4,-6,8,4,8,4,-73,67,-61,57,-53,65,4,-62,64,4,-93,101,-6,4
%N First differences of A257339.
%C a(n) = A257339(n+1) - A257339(n).
%H Reinhard Zumkeller, <a href="/A257111/b257111.txt">Table of n, a(n) for n = 1..10000</a>
%o (Haskell)
%o a257111 n = a257111_list !! (n-1)
%o a257111_list = zipWith (-) (tail a257339_list) a257339_list
%Y Cf. A257339.
%K sign
%O 1,3
%A _Reinhard Zumkeller_, Apr 24 2015