A248218 - cp's OEIS frontend

A248218 Period in residues modulo n in iteration of x^2 + 1 starting at 0.

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

[1, 2, 1, 2, 3, 2, 1, 2, 3, 6, 2, 2, 4, 2, 3, 2, 6, 6, 1, 6, 1, 2, 2, 2, 3, 4, 3, 2, 2, 6, 1, 2, 2, 6, 3, 6, 1, 2, 4, 6, 7, 2, 1, 2, 3, 2, 4, 2, 6, 6, 6, 4, 2, 6, 6, 2, 1, 2, 3, 6, 10, 2, 3, 2, 12, 2, 2, 6, 2, 6, 11, 6, 6, 2, 3, 2, 2, 4, 4, 6, 9, 14, 5, 2, 6]

cp's OEIS Frontend

A248218 Period in residues modulo n in iteration of x^2 + 1 starting at 0.

Table of values

List of values

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

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

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