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 | 43 |
| 4 | 529 |
| 5 | 8451 |
| 6 | 167397 |
| 7 | 3984807 |
| 8 | 111319257 |
| 9 | 3583777723 |
| 10 | 131082199809 |
| 11 | 5385265586075 |
| 12 | 246172834737485 |
| 13 | 12422776100542887 |
| 14 | 687441750763500441 |
| 15 | 41475644663003037947 |
| 16 | 2714680813135603845921 |