A181720 - cp's OEIS frontend

A181720 a(n) = smallest multiple of n which contains its base 10 reversal as a substring.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	1010
11	11
12	216
13	312
14	1414
15	510
16	1616
17	714
18	810
19	912
20	1020
21	126
22	22
23	322
24	2424
25	525
26	624
27	729
28	1820
29	928
30	3030
31	713
32	2304
33	33
34	3434
35	3535
36	3636
37	1073
38	836
39	936
40	1040
41	1148
42	924
43	344
44	44
45	540
46	644
47	1974
48	384
49	294
50	1050
51	153
52	2548
53	3551
54	1458
55	55
56	5656
57	4275
58	1856
59	295
60	3060

[1, 2, 3, 4, 5, 6, 7, 8, 9, 1010, 11, 216, 312, 1414, 510, 1616, 714, 810, 912, 1020, 126, 22, 322, 2424, 525, 624, 729, 1820, 928, 3030, 713, 2304, 33, 3434, 3535, 3636, 1073, 836, 936, 1040, 1148, 924, 344, 44, 540, 644, 1974, 384, 294, 1050, 153, 2548, 3551, 1458, 55, 5656, 4275, 1856, 295, 3060]

cp's OEIS Frontend

A181720 a(n) = smallest multiple of n which contains its base 10 reversal as a substring.

Table of values

List of values