A138077 Index of the largest maximal subgroup of PSL(3,q) as q runs through the prime powers (A000961).

7, 13, 21, 31, 57, 73, 91, 133

Offset: 1

Author

John Cannon and N. J. A. Sloane, Dec 06 2009

Keywords

• nonn
• hard
• more

Comments

First eight entries agree with the ATLAS. - Eric M. Schmidt, Apr 21 2013

Is this sequence simply A335865 starting with the second term? - Max Alekseyev, Apr 04 2022

Crossrefs

Cf. A000961, A003807 (order of PSL(3,q)), A335865.

Programs

Sage

def a138077_q(q): G = PSL(3,q); d = G.order(); return d // max(H.order() for H in G.conjugacy_classes_subgroups() if H.order()Max Alekseyev, Apr 05 2022

Extensions

a(3) corrected by Eric M. Schmidt, Apr 20 2013

Unconfirmed terms from a(9) onward removed by Max Alekseyev, Apr 05 2022