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 | 27 |
| 2 | 648 |
| 3 | 10539 |
| 4 | 149346 |
| 5 | 1938780 |
| 6 | 23903442 |
| 7 | 284222502 |
| 8 | 3292100235 |
| 9 | 37420852599 |