A181721 - cp's OEIS frontend

A181721 The smallest number k such that the product k*n contains digit-reverse(n) as a substring.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	101
11	1
12	18
13	24
14	101
15	34
16	101
17	42
18	45
19	48
20	51
21	6
22	1
23	14
24	101
25	21
26	24
27	27
28	65
29	32
30	101
31	23
32	72
33	1
34	101
35	101
36	101
37	29
38	22
39	24
40	26
41	28
42	22
43	8
44	1
45	12
46	14
47	42
48	8
49	6
50	21
51	3
52	49
53	67
54	27
55	1
56	101
57	75
58	32
59	5
60	51

[1, 1, 1, 1, 1, 1, 1, 1, 1, 101, 1, 18, 24, 101, 34, 101, 42, 45, 48, 51, 6, 1, 14, 101, 21, 24, 27, 65, 32, 101, 23, 72, 1, 101, 101, 101, 29, 22, 24, 26, 28, 22, 8, 1, 12, 14, 42, 8, 6, 21, 3, 49, 67, 27, 1, 101, 75, 32, 5, 51]

cp's OEIS Frontend

A181721 The smallest number k such that the product k*n contains digit-reverse(n) as a substring.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	101
11	1
12	18
13	24
14	101
15	34
16	101
17	42
18	45
19	48
20	51
21	6
22	1
23	14
24	101
25	21
26	24
27	27
28	65
29	32
30	101
31	23
32	72
33	1
34	101
35	101
36	101
37	29
38	22
39	24
40	26
41	28
42	22
43	8
44	1
45	12
46	14
47	42
48	8
49	6
50	21
51	3
52	49
53	67
54	27
55	1
56	101
57	75
58	32
59	5
60	51

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	101
11	1
12	18
13	24
14	101
15	34
16	101
17	42
18	45
19	48
20	51
21	6
22	1
23	14
24	101
25	21
26	24
27	27
28	65
29	32
30	101
31	23
32	72
33	1
34	101
35	101
36	101
37	29
38	22
39	24
40	26
41	28
42	22
43	8
44	1
45	12
46	14
47	42
48	8
49	6
50	21
51	3
52	49
53	67
54	27
55	1
56	101
57	75
58	32
59	5
60	51

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	101
11	1
12	18
13	24
14	101
15	34
16	101
17	42
18	45
19	48
20	51
21	6
22	1
23	14
24	101
25	21
26	24
27	27
28	65
29	32
30	101
31	23
32	72
33	1
34	101
35	101
36	101
37	29
38	22
39	24
40	26
41	28
42	22
43	8
44	1
45	12
46	14
47	42
48	8
49	6
50	21
51	3
52	49
53	67
54	27
55	1
56	101
57	75
58	32
59	5
60	51