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 | 7 |
| 2 | 97 |
| 3 | 2015 |
| 4 | 55841 |
| 5 | 1935719 |
| 6 | 80574433 |
| 7 | 3915183103 |
| 8 | 217530794305 |
| 9 | 13603055116679 |
| 10 | 945542295992801 |
| 11 | 72321915976403807 |
| 12 | 6036466379411066977 |
| 13 | 545983089637963491175 |
| 14 | 53194885608199879974241 |