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 | 5 |
| 4 | 341 |
| 5 | 5461 |
| 6 | 21845 |
| 7 | 89478485 |
| 8 | 96076792050570581 |
| 9 | 25790417485112089060398421 |
| 10 | 6760803201217223474649083762005 |
| 11 | 7089215977519551322153637654828504405 |