A380578 - cp's OEIS frontend

A380578 Number of nonisomorphic groups appearing as the group of units of the ring Z/kZ for every k such that phi(k) = n.

n	a(n)
1	1
2	1
3	0
4	2
5	0
6	1
7	0
8	2
9	0
10	1
11	0
12	2
13	0
14	0
15	0
16	3
17	0
18	1
19	0
20	2
21	0
22	1
23	0
24	2
25	0
26	0
27	0
28	1
29	0
30	1
31	0
32	4
33	0
34	0
35	0
36	3
37	0
38	0
39	0
40	3
41	0
42	1
43	0
44	1
45	0
46	1
47	0
48	3
49	0
50	0
51	0
52	1
53	0
54	1
55	0
56	1
57	0
58	1
59	0
60	2
61	0
62	0
63	0
64	5
65	0
66	1
67	0
68	0
69	0
70	1
71	0
72	5
73	0
74	0
75	0
76	0
77	0
78	1
79	0
80	3
81	0
82	1
83	0
84	1
85	0
86	0
87	0
88	3
89	0
90	0
91	0

[1, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 2, 0, 0, 0, 3, 0, 1, 0, 2, 0, 1, 0, 2, 0, 0, 0, 1, 0, 1, 0, 4, 0, 0, 0, 3, 0, 0, 0, 3, 0, 1, 0, 1, 0, 1, 0, 3, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 2, 0, 0, 0, 5, 0, 1, 0, 0, 0, 1, 0, 5, 0, 0, 0, 0, 0, 1, 0, 3, 0, 1, 0, 1, 0, 0, 0, 3, 0, 0, 0]

cp's OEIS Frontend

A380578 Number of nonisomorphic groups appearing as the group of units of the ring Z/kZ for every k such that phi(k) = n.

Table of values

List of values

n	a(n)
1	1
2	1
3	0
4	2
5	0
6	1
7	0
8	2
9	0
10	1
11	0
12	2
13	0
14	0
15	0
16	3
17	0
18	1
19	0
20	2
21	0
22	1
23	0
24	2
25	0
26	0
27	0
28	1
29	0
30	1
31	0
32	4
33	0
34	0
35	0
36	3
37	0
38	0
39	0
40	3
41	0
42	1
43	0
44	1
45	0
46	1
47	0
48	3
49	0
50	0
51	0
52	1
53	0
54	1
55	0
56	1
57	0
58	1
59	0
60	2
61	0
62	0
63	0
64	5
65	0
66	1
67	0
68	0
69	0
70	1
71	0
72	5
73	0
74	0
75	0
76	0
77	0
78	1
79	0
80	3
81	0
82	1
83	0
84	1
85	0
86	0
87	0
88	3
89	0
90	0
91	0

n	a(n)
1	1
2	1
3	0
4	2
5	0
6	1
7	0
8	2
9	0
10	1
11	0
12	2
13	0
14	0
15	0
16	3
17	0
18	1
19	0
20	2
21	0
22	1
23	0
24	2
25	0
26	0
27	0
28	1
29	0
30	1
31	0
32	4
33	0
34	0
35	0
36	3
37	0
38	0
39	0
40	3
41	0
42	1
43	0
44	1
45	0
46	1
47	0
48	3
49	0
50	0
51	0
52	1
53	0
54	1
55	0
56	1
57	0
58	1
59	0
60	2
61	0
62	0
63	0
64	5
65	0
66	1
67	0
68	0
69	0
70	1
71	0
72	5
73	0
74	0
75	0
76	0
77	0
78	1
79	0
80	3
81	0
82	1
83	0
84	1
85	0
86	0
87	0
88	3
89	0
90	0
91	0

n	a(n)
1	1
2	1
3	0
4	2
5	0
6	1
7	0
8	2
9	0
10	1
11	0
12	2
13	0
14	0
15	0
16	3
17	0
18	1
19	0
20	2
21	0
22	1
23	0
24	2
25	0
26	0
27	0
28	1
29	0
30	1
31	0
32	4
33	0
34	0
35	0
36	3
37	0
38	0
39	0
40	3
41	0
42	1
43	0
44	1
45	0
46	1
47	0
48	3
49	0
50	0
51	0
52	1
53	0
54	1
55	0
56	1
57	0
58	1
59	0
60	2
61	0
62	0
63	0
64	5
65	0
66	1
67	0
68	0
69	0
70	1
71	0
72	5
73	0
74	0
75	0
76	0
77	0
78	1
79	0
80	3
81	0
82	1
83	0
84	1
85	0
86	0
87	0
88	3
89	0
90	0
91	0