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 | 1 |
| 1 | 17 |
| 2 | 169 |
| 3 | 1673 |
| 4 | 17041 |
| 5 | 177857 |
| 6 | 1889209 |
| 7 | 20310713 |
| 8 | 220123681 |
| 9 | 2398301297 |
| 10 | 26219899849 |
| 11 | 287288997353 |
| 12 | 3152269663921 |
| 13 | 34619601154337 |
| 14 | 380428056656089 |
| 15 | 4181995730925593 |
| 16 | 45982962794141761 |
| 17 | 505679659013280977 |