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 | 3 |
| 3 | 4 |
| 4 | 11 |
| 5 | 17 |
| 6 | 44 |
| 7 | 74 |
| 8 | 184 |
| 9 | 327 |
| 10 | 790 |
| 11 | 1461 |
| 12 | 3452 |
| 13 | 6584 |
| 14 | 15278 |
| 15 | 29879 |
| 16 | 68290 |
| 17 | 136391 |
| 18 | 307696 |
| 19 | 625731 |
| 20 | 1395696 |
| 21 | 2883357 |
| 22 | 6367199 |
| 23 | 13338421 |
| 24 | 29193025 |
| 25 | 61920497 |
| 26 | 134442102 |
| 27 | 288368511 |
| 28 | 621609060 |
| 29 | 1346873365 |
| 30 | 2884432810 |