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 | 10 |
| 2 | 105 |
| 3 | 1250 |
| 4 | 14385 |
| 5 | 160426 |
| 6 | 1770265 |
| 7 | 19484770 |
| 8 | 214354785 |
| 9 | 2357941130 |
| 10 | 25937414601 |
| 11 | 285311655970 |
| 12 | 3138428355985 |
| 13 | 34522712115370 |
| 14 | 379749833544825 |
| 15 | 4177248169365026 |
| 16 | 45949729863506625 |
| 17 | 505447028499210250 |