A166937 - cp's OEIS frontend

A166937 Positive integers n such that when they are written in binary, the longest palindromic substring (or at least one of which that is tied for longest) in binary n begins and ends with a 1.

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

[1, 2, 3, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 23, 25, 26, 27, 28, 29, 30, 31, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 45, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 73, 75, 77, 79, 81, 83, 84, 85, 86, 87, 89, 90]

cp's OEIS Frontend

A166937 Positive integers n such that when they are written in binary, the longest palindromic substring (or at least one of which that is tied for longest) in binary n begins and ends with a 1.

Table of values

List of values

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

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

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