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 | 110 |
| 2 | 12705 |
| 3 | 1490720 |
| 4 | 176277640 |
| 5 | 20941783632 |
| 6 | 2495562549480 |
| 7 | 298041470195040 |
| 8 | 35653210872081660 |
| 9 | 4270462368900447720 |
| 10 | 512028438031163681628 |
| 11 | 61443412563739641795360 |
| 12 | 7378329792029068652259480 |
| 13 | 886534702703800402679177520 |
| 14 | 106574136046464005550646840440 |