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 | 5 |
| 2 | 6 |
| 3 | 17 |
| 4 | 40 |
| 5 | 97 |
| 6 | 137 |
| 7 | 371 |
| 8 | 2734 |
| 9 | 14041 |
| 10 | 16775 |
| 11 | 30816 |
| 12 | 47591 |
| 13 | 125998 |
| 14 | 299587 |
| 15 | 5818151 |
| 16 | 6117738 |
| 17 | 18053627 |
| 18 | 24171365 |
| 19 | 187253182 |
| 20 | 211424547 |
| 21 | 398677729 |
| 22 | 3799524108 |
| 23 | 4198201837 |
| 24 | 16394129619 |
| 25 | 20592331456 |
| 26 | 36986461075 |
| 27 | 94565253606 |