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 | 2 |
| 2 | 5 |
| 3 | 10 |
| 4 | 23 |
| 5 | 112 |
| 6 | 345 |
| 7 | 1942 |
| 8 | 30599 |
| 9 | 544828 |
| 10 | 434039265 |
| 11 | 3405254338 |
| 12 | 99194856500009835 |
| 13 | 1066340417590905452314582004 |
| 14 | 20201042817684183533764005921 |