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 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 7 |
| 7 | 15 |
| 8 | 29 |
| 9 | 62 |
| 10 | 129 |
| 11 | 279 |
| 12 | 602 |
| 13 | 1326 |
| 14 | 2928 |
| 15 | 6544 |
| 16 | 14692 |
| 17 | 33233 |
| 18 | 75512 |
| 19 | 172506 |
| 20 | 395633 |
| 21 | 911108 |
| 22 | 2105261 |
| 23 | 4880535 |
| 24 | 11346694 |
| 25 | 26451357 |
| 26 | 61813588 |
| 27 | 144781303 |
| 28 | 339820852 |
| 29 | 799168292 |
| 30 | 1882845298 |
| 31 | 4443543279 |
| 32 | 10503486112 |
| 33 | 24864797324 |
| 34 | 58944602767 |
| 35 | 139918663784 |