A141707 - cp's OEIS frontend

A141707 Least k>0 such that (2n-1)k is palindromic in base 2.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	3
7	5
8	1
9	1
10	27
11	1
12	89
13	13
14	1
15	49
16	1
17	1
18	13
19	69
20	5
21	25
22	3
23	1
24	103
25	29
26	1
27	63
28	3
29	9
30	103
31	7
32	1
33	1
34	19
35	37
36	147
37	1
38	13
39	3
40	19
41	11
42	45
43	1
44	37
45	23
46	3
47	1
48	27
49	61
50	1
51	233
52	47
53	13
54	1
55	21
56	23
57	59
58	525
59	5
60	1
61	93
62	23
63	41
64	1
65	1
66	49
67	27
68	13
69	187
70	87
71	269
72	15
73	111
74	13
75	29
76	7
77	1
78	13
79	3

[1, 1, 1, 1, 1, 3, 5, 1, 1, 27, 1, 89, 13, 1, 49, 1, 1, 13, 69, 5, 25, 3, 1, 103, 29, 1, 63, 3, 9, 103, 7, 1, 1, 19, 37, 147, 1, 13, 3, 19, 11, 45, 1, 37, 23, 3, 1, 27, 61, 1, 233, 47, 13, 1, 21, 23, 59, 525, 5, 1, 93, 23, 41, 1, 1, 49, 27, 13, 187, 87, 269, 15, 111, 13, 29, 7, 1, 13, 3]

cp's OEIS Frontend

A141707 Least k>0 such that (2n-1)k is palindromic in base 2.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	3
7	5
8	1
9	1
10	27
11	1
12	89
13	13
14	1
15	49
16	1
17	1
18	13
19	69
20	5
21	25
22	3
23	1
24	103
25	29
26	1
27	63
28	3
29	9
30	103
31	7
32	1
33	1
34	19
35	37
36	147
37	1
38	13
39	3
40	19
41	11
42	45
43	1
44	37
45	23
46	3
47	1
48	27
49	61
50	1
51	233
52	47
53	13
54	1
55	21
56	23
57	59
58	525
59	5
60	1
61	93
62	23
63	41
64	1
65	1
66	49
67	27
68	13
69	187
70	87
71	269
72	15
73	111
74	13
75	29
76	7
77	1
78	13
79	3

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	3
7	5
8	1
9	1
10	27
11	1
12	89
13	13
14	1
15	49
16	1
17	1
18	13
19	69
20	5
21	25
22	3
23	1
24	103
25	29
26	1
27	63
28	3
29	9
30	103
31	7
32	1
33	1
34	19
35	37
36	147
37	1
38	13
39	3
40	19
41	11
42	45
43	1
44	37
45	23
46	3
47	1
48	27
49	61
50	1
51	233
52	47
53	13
54	1
55	21
56	23
57	59
58	525
59	5
60	1
61	93
62	23
63	41
64	1
65	1
66	49
67	27
68	13
69	187
70	87
71	269
72	15
73	111
74	13
75	29
76	7
77	1
78	13
79	3

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	3
7	5
8	1
9	1
10	27
11	1
12	89
13	13
14	1
15	49
16	1
17	1
18	13
19	69
20	5
21	25
22	3
23	1
24	103
25	29
26	1
27	63
28	3
29	9
30	103
31	7
32	1
33	1
34	19
35	37
36	147
37	1
38	13
39	3
40	19
41	11
42	45
43	1
44	37
45	23
46	3
47	1
48	27
49	61
50	1
51	233
52	47
53	13
54	1
55	21
56	23
57	59
58	525
59	5
60	1
61	93
62	23
63	41
64	1
65	1
66	49
67	27
68	13
69	187
70	87
71	269
72	15
73	111
74	13
75	29
76	7
77	1
78	13
79	3