A086768 - OEIS

A086768

Number of conjugacy classes in the group GL(3,Z_n).

1, 6, 24, 60, 120, 144, 336, 536, 714, 720, 1320, 1440, 2184, 2016, 2880, 4528, 4896, 4284, 6840, 7200, 8064, 7920, 12144, 12864, 15540, 13104, 19908, 20160, 24360, 17280, 29760, 37216, 31680, 29376, 40320, 42840, 50616, 41040, 52416, 64320, 68880, 48384, 79464, 79200, 85680, 72864

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..46.

FORMULA

For a prime p : a(p) = p*(p^2 - 1).

PROG

(Magma) [Nclasses(GeneralLinearGroup(3, ResidueClassRing(n))) : n in [2..50]]; // Robin Visser, Aug 06 2023

CROSSREFS

Cf. A064767, A062354.

Sequence in context: A329858 A211615 A195647 * A160944 A160936 A007531