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 | 2 |
| 2 | 11 |
| 3 | 95 |
| 4 | 1173 |
| 5 | 19364 |
| 6 | 407447 |
| 7 | 10552664 |
| 8 | 327719713 |
| 9 | 119600021230 |
| 10 | 504784756672 |
| 11 | 24321086122048 |