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 | 0 |
| 2 | 15 |
| 3 | 728 |
| 4 | 65535 |
| 5 | 9765624 |
| 6 | 2176782335 |
| 7 | 678223072848 |
| 8 | 281474976710655 |
| 9 | 150094635296999120 |
| 10 | 99999999999999999999 |
| 11 | 81402749386839761113320 |
| 12 | 79496847203390844133441535 |
| 13 | 91733330193268616658399616008 |
| 14 | 123476695691247935826229781856255 |