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 | 2 |
| 3 | 6 |
| 4 | 7 |
| 5 | 36 |
| 6 | 674 |
| 7 | 815 |
| 8 | 11621 |
| 9 | 449652 |
| 10 | 2386324 |
| 11 | 2643745 |
| 12 | 187894152 |
| 13 | 704719562 |
| 14 | 1390873253 |
| 15 | 1625785299 |
| 16 | 3479964180 |
| 17 | 6909167935 |
| 18 | 12446961112 |