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 | 6 |
| 2 | 36 |
| 3 | 157 |
| 4 | 482 |
| 5 | 1203 |
| 6 | 2673 |
| 7 | 5139 |
| 8 | 9389 |
| 9 | 15930 |
| 10 | 25810 |
| 11 | 39855 |
| 12 | 59711 |
| 13 | 86346 |
| 14 | 122467 |
| 15 | 168957 |
| 16 | 229743 |
| 17 | 305153 |
| 18 | 400844 |
| 19 | 518154 |
| 20 | 662629 |
| 21 | 835490 |
| 22 | 1044410 |
| 23 | 1292216 |
| 24 | 1588236 |
| 25 | 1930057 |
| 26 | 2334622 |
| 27 | 2798143 |
| 28 | 3340038 |
| 29 | 3955063 |
| 30 | 4663169 |