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 | 10 |
| 2 | 805 |
| 3 | 23730 |
| 4 | 431319 |
| 5 | 5862920 |
| 6 | 65548890 |
| 7 | 636520890 |
| 8 | 5555779185 |
| 9 | 44603489700 |