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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 7 |
| 6 | 14 |
| 7 | 31 |
| 8 | 66 |
| 9 | 141 |
| 10 | 313 |
| 11 | 702 |
| 12 | 1577 |
| 13 | 3581 |
| 14 | 8207 |
| 15 | 18903 |
| 16 | 43770 |
| 17 | 101903 |
| 18 | 238282 |
| 19 | 559322 |
| 20 | 1317717 |
| 21 | 3114676 |
| 22 | 7383914 |
| 23 | 17552857 |
| 24 | 41831618 |
| 25 | 99923471 |
| 26 | 239200459 |
| 27 | 573750288 |
| 28 | 1378763083 |
| 29 | 3319005743 |
| 30 | 8002573350 |
| 31 | 19324601494 |
| 32 | 46731582653 |
| 33 | 113160019865 |