cp's OEIS Frontend

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.

A019550 a(n) is the concatenation of n and 2n.

Table of values

n a(n)
1 12
2 24
3 36
4 48
5 510
6 612
7 714
8 816
9 918
10 1020
11 1122
12 1224
13 1326
14 1428
15 1530
16 1632
17 1734
18 1836
19 1938
20 2040
21 2142
22 2244
23 2346
24 2448
25 2550
26 2652
27 2754
28 2856
29 2958
30 3060
31 3162
32 3264
33 3366
34 3468
35 3570
36 3672
37 3774
38 3876
39 3978
40 4080
41 4182
42 4284
43 4386
44 4488
45 4590

List of values

[12, 24, 36, 48, 510, 612, 714, 816, 918, 1020, 1122, 1224, 1326, 1428, 1530, 1632, 1734, 1836, 1938, 2040, 2142, 2244, 2346, 2448, 2550, 2652, 2754, 2856, 2958, 3060, 3162, 3264, 3366, 3468, 3570, 3672, 3774, 3876, 3978, 4080, 4182, 4284, 4386, 4488, 4590]