A043725 - cp's OEIS frontend

A043725 Numbers whose number of runs in the base-2 representation is congruent to 1 mod 4.

n	a(n)
1	1
2	3
3	7
4	15
5	21
6	31
7	37
8	41
9	43
10	45
11	53
12	63
13	69
14	73
15	75
16	77
17	81
18	83
19	87
20	89
21	91
22	93
23	101
24	105
25	107
26	109
27	117
28	127
29	133
30	137
31	139
32	141
33	145
34	147
35	151
36	153
37	155
38	157
39	161
40	163
41	167
42	175
43	177
44	179
45	183
46	185
47	187
48	189
49	197
50	201
51	203
52	205

[1, 3, 7, 15, 21, 31, 37, 41, 43, 45, 53, 63, 69, 73, 75, 77, 81, 83, 87, 89, 91, 93, 101, 105, 107, 109, 117, 127, 133, 137, 139, 141, 145, 147, 151, 153, 155, 157, 161, 163, 167, 175, 177, 179, 183, 185, 187, 189, 197, 201, 203, 205]

cp's OEIS Frontend

A043725 Numbers whose number of runs in the base-2 representation is congruent to 1 mod 4.

Table of values

List of values

n	a(n)
1	1
2	3
3	7
4	15
5	21
6	31
7	37
8	41
9	43
10	45
11	53
12	63
13	69
14	73
15	75
16	77
17	81
18	83
19	87
20	89
21	91
22	93
23	101
24	105
25	107
26	109
27	117
28	127
29	133
30	137
31	139
32	141
33	145
34	147
35	151
36	153
37	155
38	157
39	161
40	163
41	167
42	175
43	177
44	179
45	183
46	185
47	187
48	189
49	197
50	201
51	203
52	205

n	a(n)
1	1
2	3
3	7
4	15
5	21
6	31
7	37
8	41
9	43
10	45
11	53
12	63
13	69
14	73
15	75
16	77
17	81
18	83
19	87
20	89
21	91
22	93
23	101
24	105
25	107
26	109
27	117
28	127
29	133
30	137
31	139
32	141
33	145
34	147
35	151
36	153
37	155
38	157
39	161
40	163
41	167
42	175
43	177
44	179
45	183
46	185
47	187
48	189
49	197
50	201
51	203
52	205

n	a(n)
1	1
2	3
3	7
4	15
5	21
6	31
7	37
8	41
9	43
10	45
11	53
12	63
13	69
14	73
15	75
16	77
17	81
18	83
19	87
20	89
21	91
22	93
23	101
24	105
25	107
26	109
27	117
28	127
29	133
30	137
31	139
32	141
33	145
34	147
35	151
36	153
37	155
38	157
39	161
40	163
41	167
42	175
43	177
44	179
45	183
46	185
47	187
48	189
49	197
50	201
51	203
52	205