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 | 5 |
| 4 | 16 |
| 5 | 52 |
| 6 | 208 |
| 7 | 911 |
| 8 | 4637 |
| 9 | 26422 |
| 10 | 169163 |
| 11 | 1198651 |
| 12 | 9324047 |
| 13 | 78860687 |
| 14 | 719606005 |
| 15 | 7035514642 |