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 | 5 |
| 2 | 7 |
| 3 | 23 |
| 4 | 389 |
| 5 | 409 |
| 6 | 1511 |
| 7 | 5309 |
| 8 | 7351 |
| 9 | 37223 |
| 10 | 142811 |
| 11 | 763271 |
| 12 | 8066923 |
| 13 | 9182389 |
| 14 | 10237391 |
| 15 | 24374033 |
| 16 | 70353383 |
| 17 | 128463691 |
| 18 | 334100083 |
| 19 | 358453847 |
| 20 | 610611193 |