A068516 Number of squares (of another matrix) in the group GL(2,Z_n) described in sequence A000252.

3, 16, 16, 162, 48, 696, 104, 1236, 486, 4680, 256, 9366, 2088, 2592, 1342, 28296, 3708, 44640, 2592, 11136, 14040, 97416, 1664, 100410, 28098, 99936, 11136, 250110, 7776, 327840, 20924, 74880, 84888, 112752, 19776, 671346, 133920, 149856, 16848

Offset

2,1

Comments

The sequence is multiplicative. This is the 2-dimensional analog of A046073.

Links

Table of n, a(n) for n=2..40.

Crossrefs

Cf. A000252, A046073, A068197.

Sequence in context: A272329 A076623 A370978 * A219508 A032922 A103655

Adjacent sequences: A068513 A068514 A068515 * A068517 A068518 A068519

Keyword

nonn,mult

Author

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

Extensions

Terms a(21) and beyond from Andrey Zabolotskiy, Jul 02 2022

Status

approved