A158567 - OEIS

%I #3 Mar 30 2012 18:52:03

%S -1,0,-1,-6,4,1,0,-1,0,-1,4,-6,1,4,0,-1,0,-1,4,-6,1,0,-1,0,-1,4,-6,1,

%T 4,4,-6,1,4,-6,4,1,1,1,0,-1,0,-1,-6,4,1,0,-1,0,-1,4,-6,1,4,0,-1,0,-1,

%U 4,-6,1,0,-1,0,-1,4,-6,1,4,4,-6,1,4,-6,4,1,1,1,-9,9,0,-1,-6,4,1,0,-1,0,-1,4

%N First differences of A157680.

%F a(n)= A157680(n+1)-A157680(n).

%K sign,base,less

%O 1,4

%A _Paul Curtz_, Mar 21 2009

%E Edited and extended by _R. J. Mathar_, Apr 08 2009