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 | 8 |
| 3 | 548 |
| 4 | 29348 |
| 5 | 1308248 |
| 6 | 652312448 |
| 7 | 180110691548 |
| 8 | 65335225716548 |
| 9 | 38733853511213648 |
| 10 | 4368761145612023948 |
| 11 | 1804216772228848838648 |
| 12 | 14884872991210984993091648 |
| 13 | 9816873967836575781598117448 |
| 14 | 143397994078495393809327283088348 |