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 | 65536 |
| 3 | 43046721 |
| 4 | 4294967296 |
| 5 | 152587890625 |
| 6 | 2821109907456 |
| 7 | 33232930569601 |
| 8 | 281474976710656 |
| 9 | 1853020188851841 |
| 10 | 1 |
| 11 | 2 |
| 12 | 65537 |
| 13 | 43046722 |
| 14 | 4294967297 |
| 15 | 152587890626 |
| 16 | 2821109907457 |
| 17 | 33232930569602 |
| 18 | 281474976710657 |
| 19 | 1853020188851842 |
| 20 | 65536 |
| 21 | 65537 |
| 22 | 131072 |
| 23 | 43112257 |