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 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 8 |
| 4 | 78 |
| 5 | 349 |
| 6 | 383 |
| 7 | 13932 |
| 8 | 30452 |
| 9 | 252992198 |
| 10 | 364873753 |
| 11 | 850627701 |
| 12 | 914514429 |
| 13 | 17493745212 |
| 14 | 471008431072 |
| 15 | 1027221839335 |
| 16 | 14568535208344 |