A248755 - cp's OEIS frontend

A248755 a(n) is the number of iterations for the Lucas-Lehmer sequence A003010 (mod p_n) to enter a loop, where p_n is the n-th prime number A000040(n).

n	a(n)
1	2
2	2
3	1
4	4
5	3
6	3
7	4
8	2
9	5
10	4
11	6
12	5
13	4
14	5
15	11
16	3
17	15
18	6
19	5
20	3
21	5
22	6
23	11
24	13
25	5
26	4
27	9
28	27
29	11
30	10
31	8
32	7
33	23
34	13
35	20
36	12
37	14
38	10
39	41
40	28
41	12
42	4
43	36
44	4
45	15
46	13
47	27
48	8
49	15
50	11
51	13
52	24
53	5
54	51
55	8
56	65
57	36
58	8
59	13
60	47
61	36
62	42
63	31
64	20
65	13
66	52
67	42
68	6
69	87
70	16
71	30
72	89
73	15
74	7
75	36
76	95
77	6
78	17
79	34
80	10

[2, 2, 1, 4, 3, 3, 4, 2, 5, 4, 6, 5, 4, 5, 11, 3, 15, 6, 5, 3, 5, 6, 11, 13, 5, 4, 9, 27, 11, 10, 8, 7, 23, 13, 20, 12, 14, 10, 41, 28, 12, 4, 36, 4, 15, 13, 27, 8, 15, 11, 13, 24, 5, 51, 8, 65, 36, 8, 13, 47, 36, 42, 31, 20, 13, 52, 42, 6, 87, 16, 30, 89, 15, 7, 36, 95, 6, 17, 34, 10]

cp's OEIS Frontend

A248755 a(n) is the number of iterations for the Lucas-Lehmer sequence A003010 (mod p_n) to enter a loop, where p_n is the n-th prime number A000040(n).

Table of values

List of values

n	a(n)
1	2
2	2
3	1
4	4
5	3
6	3
7	4
8	2
9	5
10	4
11	6
12	5
13	4
14	5
15	11
16	3
17	15
18	6
19	5
20	3
21	5
22	6
23	11
24	13
25	5
26	4
27	9
28	27
29	11
30	10
31	8
32	7
33	23
34	13
35	20
36	12
37	14
38	10
39	41
40	28
41	12
42	4
43	36
44	4
45	15
46	13
47	27
48	8
49	15
50	11
51	13
52	24
53	5
54	51
55	8
56	65
57	36
58	8
59	13
60	47
61	36
62	42
63	31
64	20
65	13
66	52
67	42
68	6
69	87
70	16
71	30
72	89
73	15
74	7
75	36
76	95
77	6
78	17
79	34
80	10

n	a(n)
1	2
2	2
3	1
4	4
5	3
6	3
7	4
8	2
9	5
10	4
11	6
12	5
13	4
14	5
15	11
16	3
17	15
18	6
19	5
20	3
21	5
22	6
23	11
24	13
25	5
26	4
27	9
28	27
29	11
30	10
31	8
32	7
33	23
34	13
35	20
36	12
37	14
38	10
39	41
40	28
41	12
42	4
43	36
44	4
45	15
46	13
47	27
48	8
49	15
50	11
51	13
52	24
53	5
54	51
55	8
56	65
57	36
58	8
59	13
60	47
61	36
62	42
63	31
64	20
65	13
66	52
67	42
68	6
69	87
70	16
71	30
72	89
73	15
74	7
75	36
76	95
77	6
78	17
79	34
80	10

n	a(n)
1	2
2	2
3	1
4	4
5	3
6	3
7	4
8	2
9	5
10	4
11	6
12	5
13	4
14	5
15	11
16	3
17	15
18	6
19	5
20	3
21	5
22	6
23	11
24	13
25	5
26	4
27	9
28	27
29	11
30	10
31	8
32	7
33	23
34	13
35	20
36	12
37	14
38	10
39	41
40	28
41	12
42	4
43	36
44	4
45	15
46	13
47	27
48	8
49	15
50	11
51	13
52	24
53	5
54	51
55	8
56	65
57	36
58	8
59	13
60	47
61	36
62	42
63	31
64	20
65	13
66	52
67	42
68	6
69	87
70	16
71	30
72	89
73	15
74	7
75	36
76	95
77	6
78	17
79	34
80	10