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.
| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 15 |
| 3 | 20 |
| 4 | 30 |
| 5 | 36 |
| 6 | 40 |
| 7 | 60 |
| 8 | 84 |
| 9 | 90 |
| 10 | 100 |
| 11 | 120 |
| 12 | 140 |
| 13 | 165 |
| 14 | 180 |
| 15 | 228 |
| 16 | 240 |
| 17 | 300 |
| 18 | 340 |
| 19 | 390 |
| 20 | 420 |
| 21 | 540 |
| 22 | 660 |
| 23 | 740 |
| 24 | 840 |
| 25 | 1140 |
| 26 | 1380 |
| 27 | 1740 |
| 28 | 2340 |
| 29 | 3540 |
| 30 | 7140 |