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 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 5 |
| 7 | 8 |
| 8 | 39 |
| 9 | 235 |
| 10 | 1096 |
| 11 | 51909 |
| 12 | 2491235 |
| 13 | 348410728 |
| 14 | 6071656665789 |
| 15 | 15126791566796828495 |
| 16 | 1317584644380565684408069688 |
| 17 | 7999921680639175567165604204659004361387 |