A182039 - cp's OEIS frontend

A182039 Order of the group O(2,Z_n); number of orthogonal 2 X 2 matrices over the ring Z/nZ.

n	a(n)
1	1
2	2
3	8
4	16
5	8
6	16
7	16
8	64
9	24
10	16
11	24
12	128
13	24
14	32
15	64
16	128
17	32
18	48
19	40
20	128
21	128
22	48
23	48
24	512
25	40
26	48
27	72
28	256
29	56
30	128
31	64
32	256
33	192
34	64
35	128
36	384
37	72
38	80
39	192
40	512
41	80
42	256
43	88
44	384
45	192
46	96
47	96
48	1024
49	112
50	80
51	256
52	384
53	104
54	144
55	192
56	1024
57	320
58	112
59	120
60	1024
61	120
62	128
63	384
64	512
65	192
66	384
67	136
68	512
69	384
70	256
71	144
72	1536

[1, 2, 8, 16, 8, 16, 16, 64, 24, 16, 24, 128, 24, 32, 64, 128, 32, 48, 40, 128, 128, 48, 48, 512, 40, 48, 72, 256, 56, 128, 64, 256, 192, 64, 128, 384, 72, 80, 192, 512, 80, 256, 88, 384, 192, 96, 96, 1024, 112, 80, 256, 384, 104, 144, 192, 1024, 320, 112, 120, 1024, 120, 128, 384, 512, 192, 384, 136, 512, 384, 256, 144, 1536]

cp's OEIS Frontend

A182039 Order of the group O(2,Z_n); number of orthogonal 2 X 2 matrices over the ring Z/nZ.

Table of values

List of values