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 | 2 |
| 3 | 8 |
| 4 | 12 |
| 5 | 30 |
| 6 | 51 |
| 7 | 63 |
| 8 | 141 |
| 9 | 201 |
| 10 | 209 |
| 11 | 534 |
| 12 | 4713 |
| 13 | 5795 |
| 14 | 6611 |
| 15 | 7050 |
| 16 | 18496 |
| 17 | 24105 |
| 18 | 32292 |
| 19 | 32469 |
| 20 | 52782 |
| 21 | 59656 |
| 22 | 80190 |
| 23 | 90825 |