A227471 - cp's OEIS frontend

A227471 Position of first 0 in the binary representation of prime(n), starting the count of positions at 1 for the least significant bit.

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

[1, 3, 2, 4, 3, 2, 2, 3, 4, 2, 6, 2, 2, 3, 5, 2, 3, 2, 3, 4, 2, 5, 3, 2, 2, 2, 4, 3, 2, 2, 8, 3, 2, 3, 2, 4, 2, 3, 4, 2, 3, 2, 7, 2, 2, 4, 3, 6, 3, 2, 2, 5, 2, 3, 2, 4, 2, 5, 2, 2, 3, 2, 3, 4, 2, 2, 3, 2, 3, 2, 2, 4, 5, 2, 3, 8, 2, 2, 2, 2, 3, 2, 5, 2, 4, 3, 2, 2, 2]

cp's OEIS Frontend

A227471 Position of first 0 in the binary representation of prime(n), starting the count of positions at 1 for the least significant bit.

Table of values

List of values

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

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

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