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 | 0 |
| 3 | 15 |
| 4 | 217 |
| 5 | 2493 |
| 6 | 27625 |
| 7 | 293783 |
| 8 | 3062853 |
| 9 | 31597339 |
| 10 | 323620623 |
| 11 | 3298760889 |
| 12 | 33507184632 |
| 13 | 339449295349 |
| 14 | 3431900910160 |