A343722 - cp's OEIS frontend

A343722 a(n) is the number of starting residues r modulo n from which repeated iterations of the mapping r -> r^2 mod n never reach a fixed point.

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

[0, 0, 0, 0, 0, 0, 4, 0, 4, 0, 8, 0, 8, 8, 0, 0, 0, 8, 16, 0, 12, 16, 20, 0, 16, 16, 16, 16, 24, 0, 28, 0, 24, 0, 20, 16, 32, 32, 24, 0, 32, 24, 40, 32, 20, 40, 44, 0, 40, 32, 0, 32, 48, 32, 40, 32, 48, 48, 56, 0, 56, 56, 48, 0, 40, 48, 64, 0, 60, 40, 68, 32]

cp's OEIS Frontend

A343722 a(n) is the number of starting residues r modulo n from which repeated iterations of the mapping r -> r^2 mod n never reach a fixed point.

Table of values

List of values

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

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

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