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 | 3 |
| 6 | 6 |
| 7 | 10 |
| 8 | 20 |
| 9 | 36 |
| 10 | 73 |
| 11 | 138 |
| 12 | 281 |
| 13 | 549 |
| 14 | 1136 |
| 15 | 2263 |
| 16 | 4705 |
| 17 | 9553 |
| 18 | 20015 |
| 19 | 41096 |
| 20 | 86643 |
| 21 | 179638 |
| 22 | 380701 |
| 23 | 795892 |
| 24 | 1693003 |
| 25 | 3562217 |
| 26 | 7612680 |
| 27 | 16099538 |
| 28 | 34505797 |
| 29 | 73345831 |
| 30 | 157678081 |
| 31 | 336419942 |
| 32 | 725236780 |
| 33 | 1552662599 |
| 34 | 3354979195 |
| 35 | 7205601904 |
| 36 | 15600414855 |
| 37 | 33594465666 |