A043683 - cp's OEIS frontend

A043683 a(n) = (1/2)*(n-th number whose base-2 representation has exactly 6 runs).

n	a(n)
1	21
2	37
3	41
4	42
5	43
6	45
7	53
8	69
9	73
10	74
11	75
12	77
13	81
14	82
15	83
16	84
17	86
18	87
19	89
20	90
21	91
22	93
23	101
24	105
25	106
26	107
27	109
28	117
29	133
30	137
31	138
32	139
33	141
34	145
35	146
36	147
37	148
38	150
39	151
40	153
41	154
42	155
43	157
44	161
45	162
46	163
47	164
48	166
49	167
50	168
51	172

[21, 37, 41, 42, 43, 45, 53, 69, 73, 74, 75, 77, 81, 82, 83, 84, 86, 87, 89, 90, 91, 93, 101, 105, 106, 107, 109, 117, 133, 137, 138, 139, 141, 145, 146, 147, 148, 150, 151, 153, 154, 155, 157, 161, 162, 163, 164, 166, 167, 168, 172]

cp's OEIS Frontend

A043683 a(n) = (1/2)*(n-th number whose base-2 representation has exactly 6 runs).

Table of values

List of values

n	a(n)
1	21
2	37
3	41
4	42
5	43
6	45
7	53
8	69
9	73
10	74
11	75
12	77
13	81
14	82
15	83
16	84
17	86
18	87
19	89
20	90
21	91
22	93
23	101
24	105
25	106
26	107
27	109
28	117
29	133
30	137
31	138
32	139
33	141
34	145
35	146
36	147
37	148
38	150
39	151
40	153
41	154
42	155
43	157
44	161
45	162
46	163
47	164
48	166
49	167
50	168
51	172

n	a(n)
1	21
2	37
3	41
4	42
5	43
6	45
7	53
8	69
9	73
10	74
11	75
12	77
13	81
14	82
15	83
16	84
17	86
18	87
19	89
20	90
21	91
22	93
23	101
24	105
25	106
26	107
27	109
28	117
29	133
30	137
31	138
32	139
33	141
34	145
35	146
36	147
37	148
38	150
39	151
40	153
41	154
42	155
43	157
44	161
45	162
46	163
47	164
48	166
49	167
50	168
51	172

n	a(n)
1	21
2	37
3	41
4	42
5	43
6	45
7	53
8	69
9	73
10	74
11	75
12	77
13	81
14	82
15	83
16	84
17	86
18	87
19	89
20	90
21	91
22	93
23	101
24	105
25	106
26	107
27	109
28	117
29	133
30	137
31	138
32	139
33	141
34	145
35	146
36	147
37	148
38	150
39	151
40	153
41	154
42	155
43	157
44	161
45	162
46	163
47	164
48	166
49	167
50	168
51	172