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 | 29 |
| 4 | 209 |
| 5 | 2309 |
| 6 | 233309 |
| 7 | 30563609 |
| 8 | 4615105109 |
| 9 | 835334024909 |
| 10 | 159548798757809 |
| 11 | 49938774011194529 |
| 12 | 17628387225951669089 |
| 13 | 6575388435279972570569 |
| 14 | 2518373770712229494528309 |