A218756 Number of minimally unitary multisets in the unit groups of Z/nZ.

1, 1, 2, 2, 7, 2, 20, 5, 20, 7, 166, 5, 367, 20, 39, 39, 2135, 20, 4038, 39, 253, 166, 17476, 22, 8247, 367, 4038, 253, 97243, 39, 152548, 1363, 6089, 2135, 19463, 253, 708819, 4038, 19463, 698, 1868565, 253, 2804474, 6089, 19463, 17476, 7581158, 698, 2804474

Offset

1,3

Links

James Cranch, Table of n, a(n) for n = 1..58

James Cranch, Python code for computing this sequence

Michel Marcus, PARI scripts to generate these multisets

Example

a(8) = card{{1},{3,3},{5,5},{7,7},{3,5,7}} = 5.

Crossrefs

Sequence in context: A325211 A211780 A014840 * A317329 A235709 A341760

Adjacent sequences: A218753 A218754 A218755 * A218757 A218758 A218759

Keyword

nonn

Author

Justin Greenough, Nov 05 2012

Extensions

More terms from James Cranch, Jul 03 2018

Status

approved