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 | 5 |
| 3 | 125 |
| 4 | 8195 |
| 5 | 32675 |
| 6 | 755 |
| 7 | 34763 |
| 8 | 520283 |
| 9 | 37773179 |
| 10 | 21743337467 |
| 11 | 4647489635464983347207 |
| 12 | 1236947931143 |
| 13 | 272658152711 |
| 14 | 604398345569737906323527 |
| 15 | 9595849053479089263878087 |
| 16 | 3693713292455 |
| 17 | 288389531265129191 |
| 18 | 11150032316898390632304469945009811031588839 |