A144641 Indices of harmonic (or Ore) numbers (A001599) that are also perfect numbers.

2, 3, 6, 11, 59, 176, 310

Offset

1,1

Links

Table of n, a(n) for n=1..7.

Crossrefs

Cf. A000396, A001599.

Sequence in context: A275783 A102021 A350911 * A358237 A294720 A082002

Adjacent sequences: A144638 A144639 A144640 * A144642 A144643 A144644

Keyword

more,nonn

Author

Omar E. Pol, Jan 19 2009

Extensions

a(6)-a(7) from Donovan Johnson, Aug 25 2012

Status

approved