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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A347471 a(n) is the least number k such that n = A347470(k) := least a*b with concat(a,b) = k.

Table of values

n a(n)
0 0
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
22 122
23 123
24 38
25 55
26 126
27 39
28 47
29 129
30 56
31 311
32 48
33 133
34 134
35 57
36 49
37 137
38 138
39 139
40 58
41 411
42 67
43 431
44 144
45 59
46 146
47 147
48 68
49 77
50 105
51 173
52 226
53 531
54 69
55 155
56 78
57 157
58 158
59 159
60 106
61 611
62 621

List of values

[0, 11, 12, 13, 14, 15, 16, 17, 18, 19, 25, 111, 26, 113, 27, 35, 28, 117, 29, 119, 45, 37, 122, 123, 38, 55, 126, 39, 47, 129, 56, 311, 48, 133, 134, 57, 49, 137, 138, 139, 58, 411, 67, 431, 144, 59, 146, 147, 68, 77, 105, 173, 226, 531, 69, 155, 78, 157, 158, 159, 106, 611, 621]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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