A047052 Number of Abelian subgroups of Chevalley group A_n(2) (the group of nonsingular n X n matrices over GF(2)).

1, 5, 93, 11449, 4709398, 23380019770

Offset: 1

Author

Ahmed Fares (ahmedfares(AT)my-deja.com), Jul 18 2001

Keywords

• nonn
• hard
• more

Crossrefs

Cf. A062250, A062240.

Programs

Magma

[&+[s`length : s in AbelianSubgroups(GL(n,2))] : n in [1..6]];  // Robin Visser, Aug 14 2023

Extensions

a(5)-a(6) from Robin Visser, Aug 14 2023