A265120 - cp's OEIS frontend

A265120 Irregular array read by rows: Row n gives the number of elements in the multiplicative group mod n, (Z/nZ, *), that have order d for each divisor d of the exponent of the group.

n	a(n)
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	1
11	1
12	1
13	1
14	2
15	2
16	1
17	3
18	1
19	1
20	2
21	2
22	1
23	1
24	2
25	1
26	1
27	4
28	4
29	1
30	3
31	1
32	1
33	2
34	2
35	2
36	4
37	1
38	1
39	2
40	2
41	1
42	3
43	4
44	1
45	3
46	4
47	1
48	1
49	2
50	4
51	8
52	1
53	1
54	2
55	2
56	1
57	1
58	2
59	2
60	6
61	6
62	1
63	3
64	4
65	1
66	3
67	2
68	6
69	1
70	1
71	4
72	4
73	1
74	1
75	10
76	10
77	1
78	7
79	1
80	1
81	2
82	4
83	4
84	8

[1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 3, 1, 1, 2, 2, 1, 1, 2, 1, 1, 4, 4, 1, 3, 1, 1, 2, 2, 2, 4, 1, 1, 2, 2, 1, 3, 4, 1, 3, 4, 1, 1, 2, 4, 8, 1, 1, 2, 2, 1, 1, 2, 2, 6, 6, 1, 3, 4, 1, 3, 2, 6, 1, 1, 4, 4, 1, 1, 10, 10, 1, 7, 1, 1, 2, 4, 4, 8]

cp's OEIS Frontend

A265120 Irregular array read by rows: Row n gives the number of elements in the multiplicative group mod n, (Z/nZ, *), that have order d for each divisor d of the exponent of the group.

Table of values

List of values

n	a(n)
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	1
11	1
12	1
13	1
14	2
15	2
16	1
17	3
18	1
19	1
20	2
21	2
22	1
23	1
24	2
25	1
26	1
27	4
28	4
29	1
30	3
31	1
32	1
33	2
34	2
35	2
36	4
37	1
38	1
39	2
40	2
41	1
42	3
43	4
44	1
45	3
46	4
47	1
48	1
49	2
50	4
51	8
52	1
53	1
54	2
55	2
56	1
57	1
58	2
59	2
60	6
61	6
62	1
63	3
64	4
65	1
66	3
67	2
68	6
69	1
70	1
71	4
72	4
73	1
74	1
75	10
76	10
77	1
78	7
79	1
80	1
81	2
82	4
83	4
84	8

n	a(n)
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	1
11	1
12	1
13	1
14	2
15	2
16	1
17	3
18	1
19	1
20	2
21	2
22	1
23	1
24	2
25	1
26	1
27	4
28	4
29	1
30	3
31	1
32	1
33	2
34	2
35	2
36	4
37	1
38	1
39	2
40	2
41	1
42	3
43	4
44	1
45	3
46	4
47	1
48	1
49	2
50	4
51	8
52	1
53	1
54	2
55	2
56	1
57	1
58	2
59	2
60	6
61	6
62	1
63	3
64	4
65	1
66	3
67	2
68	6
69	1
70	1
71	4
72	4
73	1
74	1
75	10
76	10
77	1
78	7
79	1
80	1
81	2
82	4
83	4
84	8

n	a(n)
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	1
11	1
12	1
13	1
14	2
15	2
16	1
17	3
18	1
19	1
20	2
21	2
22	1
23	1
24	2
25	1
26	1
27	4
28	4
29	1
30	3
31	1
32	1
33	2
34	2
35	2
36	4
37	1
38	1
39	2
40	2
41	1
42	3
43	4
44	1
45	3
46	4
47	1
48	1
49	2
50	4
51	8
52	1
53	1
54	2
55	2
56	1
57	1
58	2
59	2
60	6
61	6
62	1
63	3
64	4
65	1
66	3
67	2
68	6
69	1
70	1
71	4
72	4
73	1
74	1
75	10
76	10
77	1
78	7
79	1
80	1
81	2
82	4
83	4
84	8