A322250 - cp's OEIS frontend

A322250 Take binary expansion of 2n-1 and delete the trailing block of 1's, except if the number is 11...1, leave a single 1.

n	a(n)
1	1
2	1
3	2
4	1
5	4
6	2
7	6
8	1
9	8
10	4
11	10
12	2
13	12
14	6
15	14
16	1
17	16
18	8
19	18
20	4
21	20
22	10
23	22
24	2
25	24
26	12
27	26
28	6
29	28
30	14
31	30
32	1
33	32
34	16
35	34
36	8
37	36
38	18
39	38
40	4
41	40
42	20
43	42
44	10
45	44
46	22
47	46
48	2
49	48
50	24
51	50
52	12
53	52
54	26
55	54
56	6
57	56
58	28
59	58
60	14
61	60
62	30
63	62
64	1
65	64

[1, 1, 2, 1, 4, 2, 6, 1, 8, 4, 10, 2, 12, 6, 14, 1, 16, 8, 18, 4, 20, 10, 22, 2, 24, 12, 26, 6, 28, 14, 30, 1, 32, 16, 34, 8, 36, 18, 38, 4, 40, 20, 42, 10, 44, 22, 46, 2, 48, 24, 50, 12, 52, 26, 54, 6, 56, 28, 58, 14, 60, 30, 62, 1, 64]

cp's OEIS Frontend

A322250 Take binary expansion of 2n-1 and delete the trailing block of 1's, except if the number is 11...1, leave a single 1.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	4
6	2
7	6
8	1
9	8
10	4
11	10
12	2
13	12
14	6
15	14
16	1
17	16
18	8
19	18
20	4
21	20
22	10
23	22
24	2
25	24
26	12
27	26
28	6
29	28
30	14
31	30
32	1
33	32
34	16
35	34
36	8
37	36
38	18
39	38
40	4
41	40
42	20
43	42
44	10
45	44
46	22
47	46
48	2
49	48
50	24
51	50
52	12
53	52
54	26
55	54
56	6
57	56
58	28
59	58
60	14
61	60
62	30
63	62
64	1
65	64

n	a(n)
1	1
2	1
3	2
4	1
5	4
6	2
7	6
8	1
9	8
10	4
11	10
12	2
13	12
14	6
15	14
16	1
17	16
18	8
19	18
20	4
21	20
22	10
23	22
24	2
25	24
26	12
27	26
28	6
29	28
30	14
31	30
32	1
33	32
34	16
35	34
36	8
37	36
38	18
39	38
40	4
41	40
42	20
43	42
44	10
45	44
46	22
47	46
48	2
49	48
50	24
51	50
52	12
53	52
54	26
55	54
56	6
57	56
58	28
59	58
60	14
61	60
62	30
63	62
64	1
65	64

n	a(n)
1	1
2	1
3	2
4	1
5	4
6	2
7	6
8	1
9	8
10	4
11	10
12	2
13	12
14	6
15	14
16	1
17	16
18	8
19	18
20	4
21	20
22	10
23	22
24	2
25	24
26	12
27	26
28	6
29	28
30	14
31	30
32	1
33	32
34	16
35	34
36	8
37	36
38	18
39	38
40	4
41	40
42	20
43	42
44	10
45	44
46	22
47	46
48	2
49	48
50	24
51	50
52	12
53	52
54	26
55	54
56	6
57	56
58	28
59	58
60	14
61	60
62	30
63	62
64	1
65	64