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 | 8 |
| 3 | 73 |
| 4 | 318 |
| 5 | 1747 |
| 6 | 8216 |
| 7 | 38027 |
| 8 | 173722 |
| 9 | 773529 |
| 10 | 3412416 |
| 11 | 14880845 |
| 12 | 64319686 |
| 13 | 276057515 |
| 14 | 1177345064 |
| 15 | 4994757435 |
| 16 | 21091941082 |
| 17 | 88706514017 |
| 18 | 371741444080 |
| 19 | 1552891025645 |
| 20 | 6468454612966 |
| 21 | 26874623008899 |
| 22 | 111396556833528 |