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A047052
Number of Abelian subgroups of Chevalley group A_n(2) (the group of nonsingular n X n matrices over GF(2)).
0
1, 5, 93, 11449, 4709398, 23380019770
OFFSET
1,2
PROG
(Magma) [&+[s`length : s in AbelianSubgroups(GL(n, 2))] : n in [1..6]]; // Robin Visser, Aug 14 2023
CROSSREFS
Sequence in context: A136097 A015030 A270071 * A049662 A264176 A178018
KEYWORD
nonn,hard,more
AUTHOR
Ahmed Fares (ahmedfares(AT)my-deja.com), Jul 18 2001
EXTENSIONS
a(5)-a(6) from Robin Visser, Aug 14 2023
STATUS
approved