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 | 5 |
| 3 | 32 |
| 4 | 316 |
| 5 | 4661 |
| 6 | 94217 |
| 7 | 2458810 |
| 8 | 80128082 |
| 9 | 3193424921 |
| 10 | 153067911301 |
| 11 | 8685693546692 |
| 12 | 574691476630760 |
| 13 | 43735137898763917 |
| 14 | 3784250198022172001 |
| 15 | 368841694500041857646 |
| 16 | 40194470526005627873182 |