cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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

Table of values

n a(n)
2 3
3 16
4 16
5 162
6 48
7 696
8 104
9 1236
10 486
11 4680
12 256
13 9366
14 2088
15 2592
16 1342
17 28296
18 3708
19 44640
20 2592
21 11136
22 14040
23 97416
24 1664
25 100410
26 28098
27 99936
28 11136
29 250110
30 7776
31 327840
32 20924
33 74880
34 84888
35 112752
36 19776
37 671346
38 133920
39 149856
40 16848

List of values

[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]