A111904 Number of unitary amicable pairs in which the smallest member has n digits.

0, 0, 1, 1, 5, 12, 59, 107, 269, 641, 1457, 3553

Offset: 1

Author

N. J. A. Sloane, Nov 24 2005

Keywords

• nonn
• base

Links

• J. O. M. Pedersen, Known Unitary Amicable Pairs
• J. O. M. Pedersen, Tables of Aliquot Cycles [Broken link]
• J. O. M. Pedersen, Tables of Aliquot Cycles [Via Internet Archive Wayback-Machine]
• J. O. M. Pedersen, Tables of Aliquot Cycles [Cached copy, pdf file only]

Crossrefs

Cf. A002952, A002953.

Extensions

The next term, a(13), is at least 6664.