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 | 8 |
| 2 | 64 |
| 3 | 512 |
| 4 | 3375 |
| 5 | 21952 |
| 6 | 140608 |
| 7 | 884736 |
| 8 | 5545233 |
| 9 | 34645976 |
| 10 | 216000000 |
| 11 | 1345572864 |
| 12 | 8377795791 |
| 13 | 52145952256 |
| 14 | 324525966848 |
| 15 | 2019487744000 |
| 16 | 12566456507249 |
| 17 | 78194107594728 |
| 18 | 486552055503808 |
| 19 | 3027480871826944 |
| 20 | 18837870152811039 |