A047052 - OEIS

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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

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..6.

PROG

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

CROSSREFS

Cf. A062250, A062240.

Sequence in context: A136097 A015030 A270071 * A049662 A264176 A178018

Adjacent sequences: A047049 A047050 A047051 * A047053 A047054 A047055

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