A023512 - cp's OEIS frontend

A023512 Exponent of 2 in prime factorization of prime(n) + 1.

n	a(n)
1	0
2	2
3	1
4	3
5	2
6	1
7	1
8	2
9	3
10	1
11	5
12	1
13	1
14	2
15	4
16	1
17	2
18	1
19	2
20	3
21	1
22	4
23	2
24	1
25	1
26	1
27	3
28	2
29	1
30	1
31	7
32	2
33	1
34	2
35	1
36	3
37	1
38	2
39	3
40	1
41	2
42	1
43	6
44	1
45	1
46	3
47	2
48	5
49	2
50	1
51	1
52	4
53	1
54	2
55	1
56	3
57	1
58	4
59	1
60	1
61	2
62	1
63	2
64	3
65	1
66	1
67	2
68	1
69	2
70	1
71	1
72	3
73	4
74	1
75	2
76	7
77	1
78	1
79	1
80	1
81	2
82	1
83	4
84	1
85	3
86	2
87	1
88	1
89	1
90	4
91	2
92	5
93	3
94	2
95	2
96	3
97	1
98	1
99	2
100	1
101	2
102	1
103	2
104	1
105	2

[0, 2, 1, 3, 2, 1, 1, 2, 3, 1, 5, 1, 1, 2, 4, 1, 2, 1, 2, 3, 1, 4, 2, 1, 1, 1, 3, 2, 1, 1, 7, 2, 1, 2, 1, 3, 1, 2, 3, 1, 2, 1, 6, 1, 1, 3, 2, 5, 2, 1, 1, 4, 1, 2, 1, 3, 1, 4, 1, 1, 2, 1, 2, 3, 1, 1, 2, 1, 2, 1, 1, 3, 4, 1, 2, 7, 1, 1, 1, 1, 2, 1, 4, 1, 3, 2, 1, 1, 1, 4, 2, 5, 3, 2, 2, 3, 1, 1, 2, 1, 2, 1, 2, 1, 2]

cp's OEIS Frontend

A023512 Exponent of 2 in prime factorization of prime(n) + 1.

Table of values

List of values

n	a(n)
1	0
2	2
3	1
4	3
5	2
6	1
7	1
8	2
9	3
10	1
11	5
12	1
13	1
14	2
15	4
16	1
17	2
18	1
19	2
20	3
21	1
22	4
23	2
24	1
25	1
26	1
27	3
28	2
29	1
30	1
31	7
32	2
33	1
34	2
35	1
36	3
37	1
38	2
39	3
40	1
41	2
42	1
43	6
44	1
45	1
46	3
47	2
48	5
49	2
50	1
51	1
52	4
53	1
54	2
55	1
56	3
57	1
58	4
59	1
60	1
61	2
62	1
63	2
64	3
65	1
66	1
67	2
68	1
69	2
70	1
71	1
72	3
73	4
74	1
75	2
76	7
77	1
78	1
79	1
80	1
81	2
82	1
83	4
84	1
85	3
86	2
87	1
88	1
89	1
90	4
91	2
92	5
93	3
94	2
95	2
96	3
97	1
98	1
99	2
100	1
101	2
102	1
103	2
104	1
105	2

n	a(n)
1	0
2	2
3	1
4	3
5	2
6	1
7	1
8	2
9	3
10	1
11	5
12	1
13	1
14	2
15	4
16	1
17	2
18	1
19	2
20	3
21	1
22	4
23	2
24	1
25	1
26	1
27	3
28	2
29	1
30	1
31	7
32	2
33	1
34	2
35	1
36	3
37	1
38	2
39	3
40	1
41	2
42	1
43	6
44	1
45	1
46	3
47	2
48	5
49	2
50	1
51	1
52	4
53	1
54	2
55	1
56	3
57	1
58	4
59	1
60	1
61	2
62	1
63	2
64	3
65	1
66	1
67	2
68	1
69	2
70	1
71	1
72	3
73	4
74	1
75	2
76	7
77	1
78	1
79	1
80	1
81	2
82	1
83	4
84	1
85	3
86	2
87	1
88	1
89	1
90	4
91	2
92	5
93	3
94	2
95	2
96	3
97	1
98	1
99	2
100	1
101	2
102	1
103	2
104	1
105	2

n	a(n)
1	0
2	2
3	1
4	3
5	2
6	1
7	1
8	2
9	3
10	1
11	5
12	1
13	1
14	2
15	4
16	1
17	2
18	1
19	2
20	3
21	1
22	4
23	2
24	1
25	1
26	1
27	3
28	2
29	1
30	1
31	7
32	2
33	1
34	2
35	1
36	3
37	1
38	2
39	3
40	1
41	2
42	1
43	6
44	1
45	1
46	3
47	2
48	5
49	2
50	1
51	1
52	4
53	1
54	2
55	1
56	3
57	1
58	4
59	1
60	1
61	2
62	1
63	2
64	3
65	1
66	1
67	2
68	1
69	2
70	1
71	1
72	3
73	4
74	1
75	2
76	7
77	1
78	1
79	1
80	1
81	2
82	1
83	4
84	1
85	3
86	2
87	1
88	1
89	1
90	4
91	2
92	5
93	3
94	2
95	2
96	3
97	1
98	1
99	2
100	1
101	2
102	1
103	2
104	1
105	2