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 | 6 |
| 3 | 36 |
| 4 | 412 |
| 5 | 9386 |
| 6 | 257318 |
| 7 | 8891854 |
| 8 | 379978716 |
| 9 | 19206532478 |
| 10 | 1120204619108 |
| 11 | 74113608972922 |
| 12 | 5483225594409823 |
| 13 | 448414229054798028 |
| 14 | 40154319792412218900 |
| 15 | 3906519894750904583838 |