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) |
|---|---|
| 5 | 945 |
| 6 | 7425 |
| 7 | 81081 |
| 8 | 78975 |
| 9 | 1468935 |
| 10 | 6375105 |
| 11 | 85930875 |
| 12 | 307879299 |
| 13 | 1519691625 |
| 14 | 8853249375 |
| 15 | 17062700625 |
| 16 | 535868474337 |
| 17 | 2241870572475 |
| 18 | 12759034818375 |
| 19 | 64260996890625 |
| 20 | 866566808687853 |
| 21 | 2964430488515625 |
| 22 | 23849823423763953 |
| 23 | 100139192108634825 |
| 24 | 772934641006640625 |
| 25 | 2696807941801171875 |