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 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 9 |
| 5 | 30 |
| 6 | 59 |
| 7 | 67 |
| 8 | 97 |
| 9 | 197 |
| 10 | 513 |
| 11 | 1729 |
| 12 | 1922 |
| 13 | 3239 |
| 14 | 4646 |
| 15 | 10734 |
| 16 | 15592 |
| 17 | 39474 |
| 18 | 238623 |
| 19 | 498579 |