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 | 168 |
| 4 | 441 |
| 5 | 1995 |
| 6 | 9025 |
| 7 | 30400 |
| 8 | 102400 |
| 9 | 403520 |
| 10 | 1590121 |
| 11 | 5746377 |
| 12 | 20766249 |
| 13 | 78708504 |
| 14 | 298321984 |
| 15 | 1101003640 |
| 16 | 4063425025 |
| 17 | 15221477315 |
| 18 | 57019231369 |
| 19 | 211813620480 |
| 20 | 786839961600 |
| 21 | 2936720666880 |
| 22 | 10960714625809 |
| 23 | 40800212085841 |