A274688 - OEIS

%I #10 Jul 07 2016 02:23:49

%S -2,3,-5,7,-8,9,-11,12,-13,15,-17,19,-20,21,-23,25,-27,28,-29,31,-32,

%T 33,-35,36,-37,39,-41,43,-44,45,-47,48,-49,51,-52,53,-55,57,-59,60,

%U -61,63,-65,67,-68,69,-71,73,-75,76,-77,79,-80,81,-83,84,-85,87,-89

%N First differences of A274687.

%C This sequence and its partial sums plus one list every integer except zero.

%F If n is even, a(n) = A053661(n+1); if n is odd, a(n) = -A053661(n+1)

%Y Cf. A030124, A053661, A274687.

%K sign

%O 1,1

%A _Max Barrentine_, Jul 02 2016