A075018 - cp's OEIS frontend

A075018 Smallest k such that the concatenation k, k-1,k-2,k-3 is divisible by n; or 0 if no such number exists.

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

[3, 3, 3, 5, 3, 3, 5, 5, 6, 3, 18, 9, 11, 5, 3, 15, 13, 15, 19, 23, 18, 29, 29, 15, 28, 11, 33, 5, 4, 3, 40, 15, 18, 13, 18, 15, 28, 19, 24, 23, 26, 39, 7, 51, 33, 29, 55, 15, 53, 53, 30, 63, 54, 33, 18, 5, 57, 41, 56, 63, 69, 71, 60, 15, 63]

cp's OEIS Frontend

A075018 Smallest k such that the concatenation k, k-1,k-2,k-3 is divisible by n; or 0 if no such number exists.

Table of values

List of values

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

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

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