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 | 22 |
| 5 | 94 |
| 6 | 524 |
| 7 | 3031 |
| 8 | 18770 |
| 9 | 118133 |
| 10 | 758381 |
| 11 | 4915652 |
| 12 | 32149296 |
| 13 | 211637205 |
| 14 | 1401194463 |
| 15 | 9321454604 |
| 16 | 62272330564 |
| 17 | 417546684096 |