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 | 14 |
| 2 | 786 |
| 3 | 61340 |
| 4 | 5562130 |
| 5 | 549676764 |
| 6 | 57440496036 |
| 7 | 6242164112184 |
| 8 | 698300344311570 |
| 9 | 79881547652046140 |
| 10 | 9301427008157320036 |
| 11 | 1098786921802152516024 |
| 12 | 131361675994216221116836 |
| 13 | 15863471168011822803270200 |
| 14 | 1932252897656224864335299400 |