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 | 524287 |
| 2 | 1161737179 |
| 3 | 273715645477 |
| 4 | 18798608421181 |
| 5 | 590286253682371 |
| 6 | 10789535445362647 |
| 7 | 132716292890482729 |
| 8 | 1206736529597136217 |
| 9 | 8649148282327007911 |
| 10 | 51159090448414546291 |
| 11 | 258320908922208380557 |
| 12 | 1142440291004823183829 |
| 13 | 4514383668573468286507 |
| 14 | 16192074241582091462191 |