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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 5 |
| 6 | 14 |
| 7 | 52 |
| 8 | 82 |
| 9 | 356 |
| 10 | 392 |
| 11 | 688 |
| 12 | 704 |
| 13 | 751 |
| 14 | 1325 |
| 15 | 1748 |
| 16 | 6683 |
| 17 | 12570 |
| 18 | 24740 |
| 19 | 28291 |
| 20 | 28307 |
| 21 | 45136 |
| 22 | 77226 |
| 23 | 128419 |
| 24 | 135993 |
| 25 | 341522 |
| 26 | 362992 |
| 27 | 643110 |