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 | 1 |
| 1 | 1 |
| 2 | 8 |
| 3 | 546 |
| 4 | 39731 |
| 5 | 2152050 |
| 6 | 99697633 |
| 7 | 4292655082 |
| 8 | 187497290034 |
| 9 | 8378760802160 |
| 10 | 385296986628990 |