A265263 - cp's OEIS frontend

A265263 Change every other 1 bit in binary expansion of n to 0.

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

[0, 1, 2, 2, 4, 4, 4, 5, 8, 8, 8, 9, 8, 9, 10, 10, 16, 16, 16, 17, 16, 17, 18, 18, 16, 17, 18, 18, 20, 20, 20, 21, 32, 32, 32, 33, 32, 33, 34, 34, 32, 33, 34, 34, 36, 36, 36, 37, 32, 33, 34, 34, 36, 36, 36, 37, 40, 40, 40, 41, 40, 41, 42, 42, 64, 64, 64, 65, 64, 65, 66, 66, 64, 65, 66, 66, 68, 68, 68, 69, 64, 65, 66, 66, 68, 68, 68, 69, 72, 72, 72]

cp's OEIS Frontend

A265263 Change every other 1 bit in binary expansion of n to 0.

Table of values

List of values

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

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

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