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 | 2 |
| 1 | 6 |
| 2 | 44 |
| 3 | 741 |
| 4 | 31574 |
| 5 | 3488556 |
| 6 | 1013594692 |
| 7 | 781364430891 |
| 8 | 1607468795310696 |
| 9 | 8860626201053673385 |
| 10 | 131236127104980388766388 |
| 11 | 5233794723805693339116465076 |
| 12 | 562910255724699183203714725974687 |
| 13 | 163474435977817298005300626019111283694 |