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 | 2 |
| 3 | 15 |
| 4 | 17 |
| 5 | 100 |
| 6 | 217 |
| 7 | 317 |
| 8 | 534 |
| 9 | 851 |
| 10 | 1385 |
| 11 | 3621 |
| 12 | 19490 |
| 13 | 23111 |
| 14 | 181267 |
| 15 | 204378 |
| 16 | 385645 |
| 17 | 9459858 |
| 18 | 9845503 |
| 19 | 19305361 |
| 20 | 144983030 |
| 21 | 164288391 |
| 22 | 966424985 |
| 23 | 2097138361 |
| 24 | 3063563346 |
| 25 | 5160701707 |
| 26 | 8224265053 |