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 | 0 |
| 2 | 35 |
| 3 | 1568 |
| 4 | 1731 |
| 5 | 1908 |
| 6 | 10595 |
| 7 | 11540 |
| 8 | 12567 |
| 9 | 63156 |
| 10 | 68663 |
| 11 | 74648 |
| 12 | 369495 |
| 13 | 401592 |
| 14 | 436475 |
| 15 | 2154968 |
| 16 | 2342043 |
| 17 | 2545356 |
| 18 | 12561467 |
| 19 | 13651820 |
| 20 | 14836815 |
| 21 | 73214988 |
| 22 | 79570031 |
| 23 | 86476688 |
| 24 | 426729615 |
| 25 | 463769520 |
| 26 | 504024467 |
| 27 | 2487163856 |
| 28 | 2703048243 |