0,2

Row sums of triangle A128623. a(n) = n * A086378(n).

a(3) = 12 = (6 + 3 + 3).

a(3) = 12 = 3*4, where 4 = A086378(3).

Cf. A128621, A000012, A086378, A128623.

Sequence in context: A057305 A008195 A001209 this_sequence A132477 A102651 A102652

Adjacent sequences: A128621 A128622 A128623 this_sequence A128625 A128626 A128627

nonn

Gary W. Adamson (qntmpkt(AT)yahoo.com), Mar 14 2007