A066541 - cp's OEIS frontend

A066541 Number of normal subgroups of the group GL(2,Z_n) of invertible 2 X 2 matrices mod n (sequence A000252).

n	a(n)
1	1
2	3
3	5
4	12
5	6
6	17
7	8
8	46
9	14
10	22
11	8
12	82
13	12
14	28
15	38
16	112
17	10
18	48
19	12
20	116
21	48
22	28
23	8
24	386
25	18
26	44
27	27
28	140
29	12
30	162
31	16
32	232
33	48
34	38
35	64
36	234
37	18
38	42
39	76
40	596
41	16
42	196
43	16
44	140
45	108
46	28
47	8
48	1022
49	24
50	66
51	66
52	232
53	12
54	93
55	64
56	680
57	72
58	44
59	8
60	1032
61	24
62	56
63	204

[1, 3, 5, 12, 6, 17, 8, 46, 14, 22, 8, 82, 12, 28, 38, 112, 10, 48, 12, 116, 48, 28, 8, 386, 18, 44, 27, 140, 12, 162, 16, 232, 48, 38, 64, 234, 18, 42, 76, 596, 16, 196, 16, 140, 108, 28, 8, 1022, 24, 66, 66, 232, 12, 93, 64, 680, 72, 44, 8, 1032, 24, 56, 204]

cp's OEIS Frontend

A066541 Number of normal subgroups of the group GL(2,Z_n) of invertible 2 X 2 matrices mod n (sequence A000252).

Table of values

List of values