A138077 - OEIS

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

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OFFSET

1,1

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

LINKS

Table of n, a(n) for n=1..8.

PROG

(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()<d) # Max Alekseyev, Apr 05 2022

CROSSREFS

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

Sequence in context: A013652 A099988 A076947 * A353206 A288655 A124192

Adjacent sequences: A138074 A138075 A138076 * A138078 A138079 A138080

KEYWORD

nonn,hard,more

AUTHOR

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

EXTENSIONS

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

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

STATUS

approved