A058384 - cp's OEIS frontend

A058384 Largest power of 2 which is a divisor of p(n)-1, where p(n) = n-th prime.

n	a(n)
1	1
2	2
3	4
4	2
5	2
6	4
7	16
8	2
9	2
10	4
11	2
12	4
13	8
14	2
15	2
16	4
17	2
18	4
19	2
20	2
21	8
22	2
23	2
24	8
25	32
26	4
27	2
28	2
29	4
30	16
31	2
32	2
33	8
34	2
35	4
36	2
37	4
38	2
39	2
40	4
41	2
42	4
43	2
44	64
45	4
46	2
47	2
48	2
49	2
50	4
51	8
52	2
53	16
54	2
55	256
56	2
57	4
58	2
59	4
60	8
61	2
62	4
63	2
64	2
65	8
66	4
67	2
68	16
69	2
70	4
71	32
72	2
73	2
74	4
75	2
76	2
77	4
78	4
79	16
80	8
81	2
82	4
83	2
84	16
85	2
86	2
87	64
88	8
89	4
90	2
91	2
92	2
93	2
94	2
95	2
96	2
97	4
98	8

[1, 2, 4, 2, 2, 4, 16, 2, 2, 4, 2, 4, 8, 2, 2, 4, 2, 4, 2, 2, 8, 2, 2, 8, 32, 4, 2, 2, 4, 16, 2, 2, 8, 2, 4, 2, 4, 2, 2, 4, 2, 4, 2, 64, 4, 2, 2, 2, 2, 4, 8, 2, 16, 2, 256, 2, 4, 2, 4, 8, 2, 4, 2, 2, 8, 4, 2, 16, 2, 4, 32, 2, 2, 4, 2, 2, 4, 4, 16, 8, 2, 4, 2, 16, 2, 2, 64, 8, 4, 2, 2, 2, 2, 2, 2, 2, 4, 8]

cp's OEIS Frontend

A058384 Largest power of 2 which is a divisor of p(n)-1, where p(n) = n-th prime.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	2
5	2
6	4
7	16
8	2
9	2
10	4
11	2
12	4
13	8
14	2
15	2
16	4
17	2
18	4
19	2
20	2
21	8
22	2
23	2
24	8
25	32
26	4
27	2
28	2
29	4
30	16
31	2
32	2
33	8
34	2
35	4
36	2
37	4
38	2
39	2
40	4
41	2
42	4
43	2
44	64
45	4
46	2
47	2
48	2
49	2
50	4
51	8
52	2
53	16
54	2
55	256
56	2
57	4
58	2
59	4
60	8
61	2
62	4
63	2
64	2
65	8
66	4
67	2
68	16
69	2
70	4
71	32
72	2
73	2
74	4
75	2
76	2
77	4
78	4
79	16
80	8
81	2
82	4
83	2
84	16
85	2
86	2
87	64
88	8
89	4
90	2
91	2
92	2
93	2
94	2
95	2
96	2
97	4
98	8

n	a(n)
1	1
2	2
3	4
4	2
5	2
6	4
7	16
8	2
9	2
10	4
11	2
12	4
13	8
14	2
15	2
16	4
17	2
18	4
19	2
20	2
21	8
22	2
23	2
24	8
25	32
26	4
27	2
28	2
29	4
30	16
31	2
32	2
33	8
34	2
35	4
36	2
37	4
38	2
39	2
40	4
41	2
42	4
43	2
44	64
45	4
46	2
47	2
48	2
49	2
50	4
51	8
52	2
53	16
54	2
55	256
56	2
57	4
58	2
59	4
60	8
61	2
62	4
63	2
64	2
65	8
66	4
67	2
68	16
69	2
70	4
71	32
72	2
73	2
74	4
75	2
76	2
77	4
78	4
79	16
80	8
81	2
82	4
83	2
84	16
85	2
86	2
87	64
88	8
89	4
90	2
91	2
92	2
93	2
94	2
95	2
96	2
97	4
98	8

n	a(n)
1	1
2	2
3	4
4	2
5	2
6	4
7	16
8	2
9	2
10	4
11	2
12	4
13	8
14	2
15	2
16	4
17	2
18	4
19	2
20	2
21	8
22	2
23	2
24	8
25	32
26	4
27	2
28	2
29	4
30	16
31	2
32	2
33	8
34	2
35	4
36	2
37	4
38	2
39	2
40	4
41	2
42	4
43	2
44	64
45	4
46	2
47	2
48	2
49	2
50	4
51	8
52	2
53	16
54	2
55	256
56	2
57	4
58	2
59	4
60	8
61	2
62	4
63	2
64	2
65	8
66	4
67	2
68	16
69	2
70	4
71	32
72	2
73	2
74	4
75	2
76	2
77	4
78	4
79	16
80	8
81	2
82	4
83	2
84	16
85	2
86	2
87	64
88	8
89	4
90	2
91	2
92	2
93	2
94	2
95	2
96	2
97	4
98	8