0,2

Table of n, a(n) for n=0..15.

a(1)=2 because the first differences of 0,1 and 1,0 are 1 and -1.

Sequence in context: A320264 A265563 A265547 * A007932 A035122 A085305

Adjacent sequences: A130800 A130801 A130802 * A130804 A130805 A130806

nonn

R. H. Hardin, Aug 20 2007

Two additional terms from R. H. Hardin, Mar 07 2010

approved