A036991 - cp's OEIS frontend

A036991 Numbers k with the property that in the binary expansion of k, reading from right to left, the number of 0's never exceeds the number of 1's.

n	a(n)
1	0
2	1
3	3
4	5
5	7
6	11
7	13
8	15
9	19
10	21
11	23
12	27
13	29
14	31
15	39
16	43
17	45
18	47
19	51
20	53
21	55
22	59
23	61
24	63
25	71
26	75
27	77
28	79
29	83
30	85
31	87
32	91
33	93
34	95
35	103
36	107
37	109
38	111
39	115
40	117
41	119
42	123
43	125
44	127
45	143
46	151
47	155
48	157
49	159
50	167
51	171
52	173
53	175
54	179
55	181
56	183
57	187
58	189
59	191
60	199
61	203

[0, 1, 3, 5, 7, 11, 13, 15, 19, 21, 23, 27, 29, 31, 39, 43, 45, 47, 51, 53, 55, 59, 61, 63, 71, 75, 77, 79, 83, 85, 87, 91, 93, 95, 103, 107, 109, 111, 115, 117, 119, 123, 125, 127, 143, 151, 155, 157, 159, 167, 171, 173, 175, 179, 181, 183, 187, 189, 191, 199, 203]

cp's OEIS Frontend

A036991 Numbers k with the property that in the binary expansion of k, reading from right to left, the number of 0's never exceeds the number of 1's.

Table of values

List of values

n	a(n)
1	0
2	1
3	3
4	5
5	7
6	11
7	13
8	15
9	19
10	21
11	23
12	27
13	29
14	31
15	39
16	43
17	45
18	47
19	51
20	53
21	55
22	59
23	61
24	63
25	71
26	75
27	77
28	79
29	83
30	85
31	87
32	91
33	93
34	95
35	103
36	107
37	109
38	111
39	115
40	117
41	119
42	123
43	125
44	127
45	143
46	151
47	155
48	157
49	159
50	167
51	171
52	173
53	175
54	179
55	181
56	183
57	187
58	189
59	191
60	199
61	203

n	a(n)
1	0
2	1
3	3
4	5
5	7
6	11
7	13
8	15
9	19
10	21
11	23
12	27
13	29
14	31
15	39
16	43
17	45
18	47
19	51
20	53
21	55
22	59
23	61
24	63
25	71
26	75
27	77
28	79
29	83
30	85
31	87
32	91
33	93
34	95
35	103
36	107
37	109
38	111
39	115
40	117
41	119
42	123
43	125
44	127
45	143
46	151
47	155
48	157
49	159
50	167
51	171
52	173
53	175
54	179
55	181
56	183
57	187
58	189
59	191
60	199
61	203

n	a(n)
1	0
2	1
3	3
4	5
5	7
6	11
7	13
8	15
9	19
10	21
11	23
12	27
13	29
14	31
15	39
16	43
17	45
18	47
19	51
20	53
21	55
22	59
23	61
24	63
25	71
26	75
27	77
28	79
29	83
30	85
31	87
32	91
33	93
34	95
35	103
36	107
37	109
38	111
39	115
40	117
41	119
42	123
43	125
44	127
45	143
46	151
47	155
48	157
49	159
50	167
51	171
52	173
53	175
54	179
55	181
56	183
57	187
58	189
59	191
60	199
61	203