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 | 65536 |
| 2 | 5764801 |
| 3 | 100000000 |
| 4 | 815730721 |
| 5 | 4294967296 |
| 6 | 16983563041 |
| 7 | 54875873536 |
| 8 | 152587890625 |
| 9 | 377801998336 |
| 10 | 852891037441 |
| 11 | 1785793904896 |
| 12 | 3512479453921 |
| 13 | 6553600000000 |
| 14 | 11688200277601 |
| 15 | 20047612231936 |
| 16 | 33232930569601 |
| 17 | 53459728531456 |
| 18 | 83733937890625 |