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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 10 |
| 6 | 11 |
| 7 | 21 |
| 8 | 49 |
| 9 | 186 |
| 10 | 207 |
| 11 | 221 |
| 12 | 342 |
| 13 | 406 |
| 14 | 3324 |
| 15 | 4443 |
| 16 | 33324 |
| 17 | 43375 |
| 18 | 222221 |
| 19 | 314000 |
| 20 | 344032 |
| 21 | 389924 |
| 22 | 414806 |
| 23 | 987652 |
| 24 | 2222221 |
| 25 | 190476186 |
| 26 | 222087442 |
| 27 | 222222221 |
| 28 | 422720878 |
| 29 | 2222222221 |
| 30 | 4444444443 |