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 | 17 |
| 2 | 58 |
| 3 | 160 |
| 4 | 408 |
| 5 | 1000 |
| 6 | 2392 |
| 7 | 5624 |
| 8 | 13048 |
| 9 | 29944 |
| 10 | 68088 |
| 11 | 153592 |
| 12 | 344056 |
| 13 | 765944 |
| 14 | 1695736 |
| 15 | 3735544 |
| 16 | 8191992 |
| 17 | 17891320 |
| 18 | 38928376 |
| 19 | 84410360 |
| 20 | 182452216 |
| 21 | 393215992 |
| 22 | 845152248 |
| 23 | 1811939320 |
| 24 | 3875536888 |
| 25 | 8271167480 |
| 26 | 17616076792 |