A092788 USUP perfect numbers.

1, 1, 1, 1, 1, 2, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2

Offset

1,6

Comments

USUP stands for UnitarySigmaUnitaryPhi(n) = A109712(n).

Links

Table of n, a(n) for n=1..16.

Formula

a(n) = m/A109712(m) where m = A092760(n). - R. J. Mathar, Sep 04 2018

Crossrefs

Cf. A092760.

Sequence in context: A156051 A091267 A003643 * A058062 A102820 A355717

Adjacent sequences: A092785 A092786 A092787 * A092789 A092790 A092791

Keyword

nonn

Author

Yasutoshi Kohmoto, Apr 14 2004

Extensions

Adapted to match A092760. - R. J. Mathar, Sep 04 2018

Status

approved