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 | 14 |
| 2 | 104 |
| 3 | 546 |
| 4 | 2274 |
| 5 | 7994 |
| 6 | 24647 |
| 7 | 68392 |
| 8 | 173978 |
| 9 | 411332 |
| 10 | 913445 |
| 11 | 1921218 |
| 12 | 3852849 |
| 13 | 7407596 |
| 14 | 13716314 |
| 15 | 24553984 |
| 16 | 42632448 |
| 17 | 71994624 |
| 18 | 118534456 |
| 19 | 190669584 |
| 20 | 300196001 |
| 21 | 463355582 |
| 22 | 702148097 |
| 23 | 1045918928 |
| 24 | 1533251980 |
| 25 | 2214194008 |
| 26 | 3152831605 |
| 27 | 4430235278 |
| 28 | 6147776297 |