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 | 1 |
| 2 | 544 |
| 3 | 9083 |
| 4 | 19750 |
| 5 | 326145 |
| 6 | 13689944 |
| 7 | 325554385 |
| 8 | 3901509248 |
| 9 | 74115297377 |
| 10 | 2013995093008 |
| 11 | 45630856227503 |
| 12 | 832426433462416 |