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 | 1 |
| 3 | 8 |
| 4 | 64 |
| 5 | 512 |
| 6 | 4096 |
| 7 | 11543176 |
| 8 | 13997521 |
| 9 | 738763264 |
| 10 | 5910106112 |
| 11 | 38477541376 |
| 12 | 47280848896 |
| 13 | 2462562648064 |
| 14 | 19700501184512 |
| 15 | 129754026714376 |
| 16 | 131491746445051 |
| 17 | 157604009476096 |
| 18 | 8304257709720064 |
| 19 | 66434061677760512 |