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 | 0 |
| 2 | 2 |
| 3 | 20 |
| 4 | 230 |
| 5 | 2515 |
| 6 | 26889 |
| 7 | 282211 |
| 8 | 2930013 |
| 9 | 30196730 |
| 10 | 309564822 |
| 11 | 3161099901 |
| 12 | 32182595954 |
| 13 | 326874672928 |
| 14 | 3313770788984 |