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 | 8 |
| 3 | 18 |
| 4 | 9261000 |
| 5 | 329422500 |
| 6 | 13456677968449745006250 |
| 7 | 11022732501667945875061568782593750 |
| 8 | 99325923481814861327531258459131254450000 |