A370757 - cp's OEIS frontend

A370757 a(n) is the least k > 0 such that 1/n and 1/k have equivalent repeating decimal digits.

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

[1, 1, 3, 1, 1, 6, 7, 1, 9, 1, 11, 3, 13, 7, 6, 1, 17, 18, 19, 1, 21, 22, 23, 6, 1, 26, 27, 7, 29, 3, 31, 1, 33, 17, 7, 36, 37, 19, 39, 1, 41, 42, 43, 44, 45, 23, 47, 3, 49, 1, 51, 13, 53, 54, 55, 7, 57, 29, 59, 6, 61, 31, 63, 1, 26, 66, 67, 17, 69, 7, 71, 72]

cp's OEIS Frontend

A370757 a(n) is the least k > 0 such that 1/n and 1/k have equivalent repeating decimal digits.

Table of values

List of values

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

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

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