OFFSET
1,2
FORMULA
For a prime p : a(p) = p*(p^3 - 1).
PROG
(Magma) [Nclasses(GeneralLinearGroup(4, ResidueClassRing(n))) : n in [2..15]];
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Robin Visser, Aug 06 2023
STATUS
approved