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) |
|---|---|
| 0 | 2 |
| 1 | 2 |
| 2 | 7 |
| 3 | 103 |
| 4 | 1619 |
| 5 | 28687 |
| 6 | 567871 |
| 7 | 12579617 |
| 8 | 310248241 |
| 9 | 8448283757 |
| 10 | 252097800623 |
| 11 | 8187297276401 |
| 12 | 287629183566841 |
| 13 | 10871811891162227 |
| 14 | 440023773804299591 |