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 | 6 |
| 3 | 7 |
| 4 | 9 |
| 5 | 10 |
| 6 | 11 |
| 7 | 16 |
| 8 | 42 |
| 9 | 53 |
| 10 | 78 |
| 11 | 321 |
| 12 | 699 |
| 13 | 1858 |
| 14 | 3425 |
| 15 | 4899 |
| 16 | 5734 |
| 17 | 11081 |
| 18 | 11675 |
| 19 | 12136 |
| 20 | 14056 |
| 21 | 16074 |
| 22 | 77969 |
| 23 | 158465 |