%I #5 Oct 14 2017 10:46:41

%S 2,3,5,-7,11,-13,17,19,-31,23,29,-47,37,-41,43,53,-83,59,-71,61,67,

%T -127,73,79,-157,89,97,-173,101,-103,107,-109,113,131,-241,137,139,

%U -271,149,-151,163,167,-337,179,181,-349,191,193,-383,197,-199,211,223,-431

%N First difference of A293666.

%C For any n > 0, |a(n)| is prime.

%e a(10) = A293666(11) - A293666(10) = 30 - 7 = 23.

%Y Cf. A293666.

%K sign

%O 1,1

%A _Rémy Sigrist_, Oct 14 2017