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 | 13 |
| 3 | 313 |
| 4 | 51169 |
| 5 | 797161 |
| 6 | 3482851 |
| 7 | 5096867 |
| 8 | 12207031 |
| 9 | 162410641 |
| 10 | 368385827 |
| 11 | 1001523179 |
| 12 | 4902814883 |
| 13 | 104849105869 |
| 14 | 131772143257 |
| 15 | 572027881891 |