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 | 2 |
| 3 | 8 |
| 4 | 4 |
| 5 | 72 |
| 6 | 65 |
| 7 | 16 |
| 8 | 18 |
| 9 | 4290 |
| 10 | 2416912633124328272 |
| 11 | 4132 |
| 12 | 4101 |
| 13 | 1183088714649826879 |