A140700 - OEIS

%I #6 Mar 31 2012 20:38:30

%S 1,-2,-3,0,-5,6,-7,0,0,10,-11,0,-13,14,15,0,-17,0,-19,0,21,22,-23,0,0,

%T 26,0,0,-29,30,-31,0,33,34,35,0,-37,38,39,0,-41,42,-43,0,0,46,-47,0

%N Row products of A140699.

%C Primes have negative signs in a(n). Differs from A055615 at a(30) = 30.

%Y Cf. A140699, A054524, A140256, A055615.

%K sign

%O 1,2

%A Mats O. Granvik and _Gary W. Adamson_, May 24 2008