A095231 - cp's OEIS frontend

A095231 a(1)=1; a(n)=least positive integer such that the concatenation of all terms, including a(n), is == 1 (mod n).

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

[1, 1, 2, 1, 1, 1, 4, 5, 3, 1, 14, 9, 7, 7, 1, 3, 25, 5, 25, 21, 2, 9, 32, 1, 26, 5, 5, 17, 33, 1, 15, 21, 30, 37, 11, 33, 15, 27, 15, 21, 33, 51, 34, 53, 21, 29, 3, 13, 20, 1, 39, 57, 19, 35, 11, 29, 29, 31, 59, 21, 55, 51, 29, 7, 26, 75, 34, 49, 25, 31, 47, 3, 43, 77, 6, 45, 62, 25]

cp's OEIS Frontend

A095231 a(1)=1; a(n)=least positive integer such that the concatenation of all terms, including a(n), is == 1 (mod n).

Table of values

List of values

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

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

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