A161323 Perfect numbers written in base 8.

6, 34, 760, 17700, 177770000, 77777600000, 1777777000000, 177777777770000000000, 17777777777777777777700000000000000000000, 77777777777777777777777777777600000000000000000000000000000

Offset: 1

Author

Juri-Stepan Gerasimov, Jun 07 2009

Keywords

• nonn
• base

Comments

All members end in 0, 1, 4, 5, or 6. Conjecturally, apart from the first two terms, all terms end in 0.

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..15

Crossrefs

Cf. A000396, A135650, A160962.

Programs

Mathematica

FromDigits[IntegerDigits[#,8]]&/@PerfectNumber[Range[10]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jul 08 2019 *)

Extensions

Edited by Charles R Greathouse IV, Mar 19 2010