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 | 2 |
| 3 | 2 |
| 4 | 2 |
| 5 | 5 |
| 6 | 5 |
| 7 | 193 |
| 8 | 2903041 |
| 9 | 250822656001 |
| 10 | 1807729046323200001 |
| 11 | 1472038679443987759104000001 |
| 12 | 21817028147643299474152432146548259236610048000000000001 |