A152810 - cp's OEIS frontend

A152810 Let the binary expansion of n be n = Sum_{k} 2^{r_k}, let e(n) be the number of r_k's that are even, o(n) the number that are odd; sequence gives odd n such that e(n) > o(n) and e(n)-o(n) == 1 or 2 (mod 6).

n	a(n)
1	1
2	5
3	7
4	13
5	17
6	19
7	23
8	25
9	29
10	31
11	37
12	49
13	53
14	55
15	61
16	65
17	67
18	71
19	73
20	77
21	79
22	83
23	89
24	91
25	95
26	97
27	101
28	103
29	109
30	113
31	115
32	119
33	121
34	125
35	127
36	133
37	145
38	149
39	151
40	157
41	181
42	193
43	197
44	199
45	205
46	209
47	211
48	215
49	217
50	221
51	223
52	229
53	241
54	245
55	247
56	253
57	257
58	259

[1, 5, 7, 13, 17, 19, 23, 25, 29, 31, 37, 49, 53, 55, 61, 65, 67, 71, 73, 77, 79, 83, 89, 91, 95, 97, 101, 103, 109, 113, 115, 119, 121, 125, 127, 133, 145, 149, 151, 157, 181, 193, 197, 199, 205, 209, 211, 215, 217, 221, 223, 229, 241, 245, 247, 253, 257, 259]

cp's OEIS Frontend

A152810 Let the binary expansion of n be n = Sum_{k} 2^{r_k}, let e(n) be the number of r_k's that are even, o(n) the number that are odd; sequence gives odd n such that e(n) > o(n) and e(n)-o(n) == 1 or 2 (mod 6).

Table of values

List of values

n	a(n)
1	1
2	5
3	7
4	13
5	17
6	19
7	23
8	25
9	29
10	31
11	37
12	49
13	53
14	55
15	61
16	65
17	67
18	71
19	73
20	77
21	79
22	83
23	89
24	91
25	95
26	97
27	101
28	103
29	109
30	113
31	115
32	119
33	121
34	125
35	127
36	133
37	145
38	149
39	151
40	157
41	181
42	193
43	197
44	199
45	205
46	209
47	211
48	215
49	217
50	221
51	223
52	229
53	241
54	245
55	247
56	253
57	257
58	259

n	a(n)
1	1
2	5
3	7
4	13
5	17
6	19
7	23
8	25
9	29
10	31
11	37
12	49
13	53
14	55
15	61
16	65
17	67
18	71
19	73
20	77
21	79
22	83
23	89
24	91
25	95
26	97
27	101
28	103
29	109
30	113
31	115
32	119
33	121
34	125
35	127
36	133
37	145
38	149
39	151
40	157
41	181
42	193
43	197
44	199
45	205
46	209
47	211
48	215
49	217
50	221
51	223
52	229
53	241
54	245
55	247
56	253
57	257
58	259

n	a(n)
1	1
2	5
3	7
4	13
5	17
6	19
7	23
8	25
9	29
10	31
11	37
12	49
13	53
14	55
15	61
16	65
17	67
18	71
19	73
20	77
21	79
22	83
23	89
24	91
25	95
26	97
27	101
28	103
29	109
30	113
31	115
32	119
33	121
34	125
35	127
36	133
37	145
38	149
39	151
40	157
41	181
42	193
43	197
44	199
45	205
46	209
47	211
48	215
49	217
50	221
51	223
52	229
53	241
54	245
55	247
56	253
57	257
58	259