%I #8 Mar 15 2024 18:12:09
%S 1,2,3,-4,5,6,7,-16,18,-10,11,-12,13,-14,15,-16,17,-18,19,20,-42,44,
%T 23,-24,25,-52,54,-56,58,-60,62,-64,66,34,-70,72,-74,76,-78,80,-82,84,
%U -86,88,-90,92,-94,96,-98,100,-102,104,-53,54,55,56,-171,-58,177,60,-183,62,-63,128,-130,132,-134,136,-138,140,-142
%N First differences of A125717.
%C In other words, a(n) = A125717(n)-A125717(n-1).
%H N. J. A. Sloane, <a href="/A370957/b370957.txt">Table of n, a(n) for n = 1..100000</a>
%Y Cf. A125717, A370958.
%K sign
%O 1,2
%A _N. J. A. Sloane_, Mar 15 2024