A047052 - OEIS

%I #9 Aug 14 2023 20:04:06

%S 1,5,93,11449,4709398,23380019770

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

%o (Magma) [&+[s`length : s in AbelianSubgroups(GL(n,2))] : n in [1..6]];  // _Robin Visser_, Aug 14 2023

%Y Cf. A062250, A062240.

%K nonn,hard,more

%O 1,2

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

%E a(5)-a(6) from _Robin Visser_, Aug 14 2023