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 | 26 |
| 3 | 3363 |
| 4 | 937444 |
| 5 | 456335045 |
| 6 | 343904160606 |
| 7 | 371198523608647 |
| 8 | 543466014742175624 |
| 9 | 1036834190110356583689 |
| 10 | 2499384905955651114739810 |
| 11 | 7429238104512325157021090411 |
| 12 | 26695718139185294187938997247212 |