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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.

A191992 Concatenation of n and the n-th composite number.

Table of values

n a(n)
1 14
2 26
3 38
4 49
5 510
6 612
7 714
8 815
9 916
10 1018
11 1120
12 1221
13 1322
14 1424
15 1525
16 1626
17 1727
18 1828
19 1930
20 2032
21 2133
22 2234
23 2335
24 2436
25 2538
26 2639
27 2740
28 2842
29 2944
30 3045
31 3146
32 3248
33 3349
34 3450
35 3551
36 3652
37 3754
38 3855
39 3956
40 4057
41 4158
42 4260
43 4362
44 4463
45 4564
46 4665
47 4766
48 4868
49 4969
50 5070
51 5172
52 5274
53 5375
54 5476

List of values

[14, 26, 38, 49, 510, 612, 714, 815, 916, 1018, 1120, 1221, 1322, 1424, 1525, 1626, 1727, 1828, 1930, 2032, 2133, 2234, 2335, 2436, 2538, 2639, 2740, 2842, 2944, 3045, 3146, 3248, 3349, 3450, 3551, 3652, 3754, 3855, 3956, 4057, 4158, 4260, 4362, 4463, 4564, 4665, 4766, 4868, 4969, 5070, 5172, 5274, 5375, 5476]

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

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