A342241 - cp's OEIS frontend

A342241 a(n) is the least k > 0 such that the first k bits and the last k bits in the binary expansion of n are the same.

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

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

cp's OEIS Frontend

A342241 a(n) is the least k > 0 such that the first k bits and the last k bits in the binary expansion of n are the same.

Table of values

List of values

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

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

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