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 | 3 |
| 3 | 4 |
| 4 | 13 |
| 5 | 157 |
| 6 | 24493 |
| 7 | 599882557 |
| 8 | 359859081592975693 |
| 9 | 129498558604939936868397356895854557 |
| 10 | 16769876680757063368089314196389622249367851612542961252860614401811693 |