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) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 21 |
| 6 | 30 |
| 7 | 33 |
| 8 | 57 |
| 9 | 100 |
| 10 | 142 |
| 11 | 144 |
| 12 | 150 |
| 13 | 198 |
| 14 | 225 |
| 15 | 304 |
| 16 | 513 |
| 17 | 782 |
| 18 | 858 |
| 19 | 3638 |
| 20 | 6076 |
| 21 | 9297 |
| 22 | 11037 |
| 23 | 12135 |
| 24 | 12876 |
| 25 | 30180 |
| 26 | 48470 |