1,2
Row sums of A130194, which is composed of A009531 in every column.
a(4) = -2 = sum of A130194 row 4 terms: (-4, -1, 2, 1).
Cf. A130194, A009531.
Sequence in context: A183043 A050604 A131015 * A071048 A098054 A075801
Adjacent sequences: A130192 A130193 A130194 * A130196 A130197 A130198
sign
Gary W. Adamson (qntmpkt(AT)yahoo.com), May 16 2007