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 | 35 |
| 2 | 1225 |
| 3 | 4861 |
| 4 | 16742 |
| 5 | 106503 |
| 6 | 486443 |
| 7 | 3569728 |
| 8 | 18874239 |
| 9 | 139219755 |
| 10 | 803098636 |
| 11 | 5786553545 |
| 12 | 35249727777 |
| 13 | 248244598082 |
| 14 | 1565658732841 |
| 15 | 10842687856821 |
| 16 | 69941258792526 |
| 17 | 479065006181663 |
| 18 | 3136670786824267 |
| 19 | 21341996465201648 |