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A068516 Number of squares (of another matrix) in the group GL(2,Z_n) described in sequence A000252. 1
3, 16, 16, 162, 48, 696, 104, 1236, 486, 4680, 256, 9366, 2088, 2592, 1342, 28296, 3708, 44640, 2592 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

COMMENTS

a(n) is multiplicative. This is the 2-dimensional analog of A046073.

LINKS

Table of n, a(n) for n=2..20.

CROSSREFS

Cf. A000252, A046073.

Sequence in context: A195883 A272329 A076623 * A219508 A032922 A103655

Adjacent sequences:  A068513 A068514 A068515 * A068517 A068518 A068519

KEYWORD

nonn,mult,more

AUTHOR

Sharon Sela (sharonsela(AT)hotmail.com), Mar 19 2002

STATUS

approved

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Last modified December 14 17:41 EST 2019. Contains 329979 sequences. (Running on oeis4.)