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 | 95 |
| 2 | 768 |
| 3 | 5216 |
| 4 | 33024 |
| 5 | 201792 |
| 6 | 1208320 |
| 7 | 7145792 |
| 8 | 41919744 |
| 9 | 244590496 |
| 10 | 1421823232 |
| 11 | 8243669664 |
| 12 | 47708339712 |
| 13 | 275738420864 |
| 14 | 1592186658816 |
| 15 | 9187634766976 |
| 16 | 52992487665152 |
| 17 | 305556178607328 |
| 18 | 1761501729738496 |