A030109 - cp's OEIS frontend

A030109 Write n in binary, reverse bits, subtract 1, divide by 2.

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

[0, 0, 1, 0, 2, 1, 3, 0, 4, 2, 6, 1, 5, 3, 7, 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15, 0, 16, 8, 24, 4, 20, 12, 28, 2, 18, 10, 26, 6, 22, 14, 30, 1, 17, 9, 25, 5, 21, 13, 29, 3, 19, 11, 27, 7, 23, 15, 31, 0, 32, 16, 48, 8, 40, 24, 56, 4, 36, 20, 52, 12, 44, 28, 60, 2, 34, 18, 50]

cp's OEIS Frontend

A030109 Write n in binary, reverse bits, subtract 1, divide by 2.

Table of values

List of values

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

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

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