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 | 3 |
| 5 | 4 |
| 6 | 6 |
| 7 | 109 |
| 8 | 246 |
| 9 | 282 |
| 10 | 564 |
| 11 | 701 |
| 12 | 22386 |
| 13 | 32152 |
| 14 | 41667 |
| 15 | 47653 |
| 16 | 48553 |
| 17 | 1142597 |
| 18 | 1313858 |
| 19 | 1412768 |
| 20 | 1677684 |
| 21 | 12607012902 |
| 22 | 19671459008 |
| 23 | 20134447808 |
| 24 | 24208576998 |
| 25 | 24863844904 |
| 26 | 26358878059 |