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 | 16512 |
| 3 | 7177734 |
| 4 | 536903680 |
| 5 | 15258984375 |
| 6 | 235093332096 |
| 7 | 2373783637372 |
| 8 | 17592194433024 |
| 9 | 102945587570685 |
| 10 | 500000050000000 |
| 11 | 2088624191887266 |
| 12 | 7703511002284032 |
| 13 | 25592946914910739 |
| 14 | 77784048516800640 |