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 | 8 |
| 4 | 9 |
| 5 | 32 |
| 6 | 62 |
| 7 | 558 |
| 8 | 993 |
| 9 | 995 |
| 10 | 1947 |
| 11 | 2150 |
| 12 | 4343 |
| 13 | 9944 |
| 14 | 10977 |
| 15 | 43054658 |
| 16 | 202275890 |
| 17 | 2291937393 |
| 18 | 2459073795 |
| 19 | 2836929091 |
| 20 | 3737529738 |
| 21 | 21382629569 |
| 22 | 248208997602 |
| 23 | 389691028017 |
| 24 | 838566394212 |
| 25 | 1019000924619 |