1,2

A083206(a(n))=0; complement of A083207; deficient numbers (A005100) are a subset.

A179529(a(n)) = 0. [From Reinhard Zumkeller, Jul 19 2010]

Table of n, a(n) for n=1..72.

Reinhard Zumkeller, Illustration of initial terms

Cf. A083211.

Sequence in context: A286291 A286926 A145198 * A187392 A232741 A108120

Adjacent sequences: A083207 A083208 A083209 * A083211 A083212 A083213

nonn

Reinhard Zumkeller, Apr 22 2003

approved