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) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 3 |
| 3 | 2 |
| 4 | 29 |
| 5 | 7 |
| 6 | 5 |
| 7 | 7993 |
| 8 | 67961 |
| 9 | 769 |
| 10 | 604661 |
| 11 | 2797 |
| 12 | 78233 |
| 13 | 1306069 |
| 14 | 783641 |
| 15 | 7018498457 |
| 16 | 2821109 |
| 17 | 692665944473 |
| 18 | 66841 |
| 19 | 609359 |
| 20 | 4400629 |
| 21 | 21936950640377 |
| 22 | 16217038422671 |
| 23 | 3022305360281 |
| 24 | 73838133832161689 |
| 25 | 992970137 |
| 26 | 170581728179 |