A362023 - cp's OEIS frontend

A362023 a(n) is the least positive integer whose decimal expansion is the concatenation of the decimal expansions of two numbers whose product is n.

n	a(n)
1	11
2	12
3	13
4	14
5	15
6	16
7	17
8	18
9	19
10	25
11	111
12	26
13	113
14	27
15	35
16	28
17	117
18	29
19	119
20	45
21	37
22	112
23	123
24	38
25	55
26	126
27	39
28	47
29	129
30	56
31	131
32	48
33	113
34	134
35	57
36	49
37	137
38	138
39	133
40	58
41	141
42	67
43	143
44	114
45	59
46	146
47	147
48	68
49	77
50	105
51	151
52	134
53	153
54	69
55	115
56	78
57	157
58	158

[11, 12, 13, 14, 15, 16, 17, 18, 19, 25, 111, 26, 113, 27, 35, 28, 117, 29, 119, 45, 37, 112, 123, 38, 55, 126, 39, 47, 129, 56, 131, 48, 113, 134, 57, 49, 137, 138, 133, 58, 141, 67, 143, 114, 59, 146, 147, 68, 77, 105, 151, 134, 153, 69, 115, 78, 157, 158]

cp's OEIS Frontend

A362023 a(n) is the least positive integer whose decimal expansion is the concatenation of the decimal expansions of two numbers whose product is n.

Table of values

List of values

n	a(n)
1	11
2	12
3	13
4	14
5	15
6	16
7	17
8	18
9	19
10	25
11	111
12	26
13	113
14	27
15	35
16	28
17	117
18	29
19	119
20	45
21	37
22	112
23	123
24	38
25	55
26	126
27	39
28	47
29	129
30	56
31	131
32	48
33	113
34	134
35	57
36	49
37	137
38	138
39	133
40	58
41	141
42	67
43	143
44	114
45	59
46	146
47	147
48	68
49	77
50	105
51	151
52	134
53	153
54	69
55	115
56	78
57	157
58	158

n	a(n)
1	11
2	12
3	13
4	14
5	15
6	16
7	17
8	18
9	19
10	25
11	111
12	26
13	113
14	27
15	35
16	28
17	117
18	29
19	119
20	45
21	37
22	112
23	123
24	38
25	55
26	126
27	39
28	47
29	129
30	56
31	131
32	48
33	113
34	134
35	57
36	49
37	137
38	138
39	133
40	58
41	141
42	67
43	143
44	114
45	59
46	146
47	147
48	68
49	77
50	105
51	151
52	134
53	153
54	69
55	115
56	78
57	157
58	158

n	a(n)
1	11
2	12
3	13
4	14
5	15
6	16
7	17
8	18
9	19
10	25
11	111
12	26
13	113
14	27
15	35
16	28
17	117
18	29
19	119
20	45
21	37
22	112
23	123
24	38
25	55
26	126
27	39
28	47
29	129
30	56
31	131
32	48
33	113
34	134
35	57
36	49
37	137
38	138
39	133
40	58
41	141
42	67
43	143
44	114
45	59
46	146
47	147
48	68
49	77
50	105
51	151
52	134
53	153
54	69
55	115
56	78
57	157
58	158