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 | 1224 |
| 2 | 36374 |
| 3 | 2486980 |
| 4 | 138118032 |
| 5 | 8454015792 |
| 6 | 492938029980 |
| 7 | 29757371834046 |
| 8 | 1753378119210848 |
| 9 | 105365264675732262 |
| 10 | 6236225995970496338 |
| 11 | 373776319178643511574 |
| 12 | 22179629928239882354518 |
| 13 | 1327081034442636655221164 |