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 | 12 |
| 3 | 25 |
| 4 | 61 |
| 5 | 108 |
| 6 | 211 |
| 7 | 1344 |
| 8 | 2339 |
| 9 | 10539 |
| 10 | 78409 |
| 11 | 283181 |
| 12 | 1748747 |
| 13 | 1795423 |
| 14 | 2386702 |
| 15 | 2819089 |
| 16 | 179101605 |
| 17 | 1923088106 |
| 18 | 2822581688 |
| 19 | 7794689270 |
| 20 | 17381011919 |
| 21 | 25635268093 |
| 22 | 28780043265 |
| 23 | 97973526253 |