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 | 7 |
| 3 | 58 |
| 4 | 422 |
| 5 | 2872 |
| 6 | 19772 |
| 7 | 142418 |
| 8 | 1096582 |
| 9 | 9040811 |
| 10 | 78452199 |
| 11 | 699839588 |
| 12 | 6297456806 |
| 13 | 56804155533 |
| 14 | 517737762700 |
| 15 | 4839960759976 |
| 16 | 46837953974511 |