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 | 36 |
| 1 | 960 |
| 2 | 11880 |
| 3 | 95040 |
| 4 | 566280 |
| 5 | 2718144 |
| 6 | 11042460 |
| 7 | 39262080 |
| 8 | 125147880 |
| 9 | 364066560 |
| 10 | 979945824 |
| 11 | 2466996480 |
| 12 | 5859116640 |
| 13 | 13220570880 |
| 14 | 28506855960 |
| 15 | 59025960576 |
| 16 | 117846969900 |
| 17 | 227667211200 |
| 18 | 426876021000 |
| 19 | 778861512000 |
| 20 | 1386019463400 |
| 21 | 2410468632000 |
| 22 | 4104188068500 |